{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-26656", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-02-19T14:20:24.145Z", "datePublished": "2024-04-02T06:08:43.558Z", "dateUpdated": "2024-11-05T09:13:19.284Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:13:19.284Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix use-after-free bug\n\nThe bug can be triggered by sending a single amdgpu_gem_userptr_ioctl\nto the AMDGPU DRM driver on any ASICs with an invalid address and size.\nThe bug was reported by Joonkyo Jung <joonkyoj@yonsei.ac.kr>.\nFor example the following code:\n\nstatic void Syzkaller1(int fd)\n{\n\tstruct drm_amdgpu_gem_userptr arg;\n\tint ret;\n\n\targ.addr = 0xffffffffffff0000;\n\targ.size = 0x80000000; /*2 Gb*/\n\targ.flags = 0x7;\n\tret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, &arg);\n}\n\nDue to the address and size are not valid there is a failure in\namdgpu_hmm_register->mmu_interval_notifier_insert->__mmu_interval_notifier_insert->\ncheck_shl_overflow, but we even the amdgpu_hmm_register failure we still call\namdgpu_hmm_unregister into amdgpu_gem_object_free which causes access to a bad address.\nThe following stack is below when the issue is reproduced when Kazan is enabled:\n\n[ +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020\n[ +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340\n[ +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff <0f> 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80\n[ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246\n[ +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b\n[ +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260\n[ +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25\n[ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00\n[ +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260\n[ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000\n[ +0.000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0\n[ +0.000010] Call Trace:\n[ +0.000006] <TASK>\n[ +0.000007] ? show_regs+0x6a/0x80\n[ +0.000018] ? __warn+0xa5/0x1b0\n[ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340\n[ +0.000018] ? report_bug+0x24a/0x290\n[ +0.000022] ? handle_bug+0x46/0x90\n[ +0.000015] ? exc_invalid_op+0x19/0x50\n[ +0.000016] ? asm_exc_invalid_op+0x1b/0x20\n[ +0.000017] ? kasan_save_stack+0x26/0x50\n[ +0.000017] ? mmu_interval_notifier_remove+0x23b/0x340\n[ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340\n[ +0.000019] ? mmu_interval_notifier_remove+0x23b/0x340\n[ +0.000020] ? __pfx_mmu_interval_notifier_remove+0x10/0x10\n[ +0.000017] ? kasan_save_alloc_info+0x1e/0x30\n[ +0.000018] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? __kasan_kmalloc+0xb1/0xc0\n[ +0.000018] ? srso_return_thunk+0x5/0x5f\n[ +0.000013] ? __kasan_check_read+0x11/0x20\n[ +0.000020] amdgpu_hmm_unregister+0x34/0x50 [amdgpu]\n[ +0.004695] amdgpu_gem_object_free+0x66/0xa0 [amdgpu]\n[ +0.004534] ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu]\n[ +0.004291] ? do_syscall_64+0x5f/0xe0\n[ +0.000023] ? srso_return_thunk+0x5/0x5f\n[ +0.000017] drm_gem_object_free+0x3b/0x50 [drm]\n[ +0.000489] amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu]\n[ +0.004295] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004270] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? __this_cpu_preempt_check+0x13/0x20\n[ +0.000015] ? srso_return_thunk+0x5/0x5f\n[ +0.000013] ? sysvec_apic_timer_interrupt+0x57/0xc0\n[ +0.000020] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20\n[ +0.000022] ? drm_ioctl_kernel+0x17b/0x1f0 [drm]\n[ +0.000496] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004272] ? drm_ioctl_kernel+0x190/0x1f0 [drm]\n[ +0.000492] drm_ioctl_kernel+0x140/0x1f0 [drm]\n[ +0.000497] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004297] ? __pfx_drm_ioctl_kernel+0x10/0x10 [d\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c"], "versions": [{"version": "1da177e4c3f4", "lessThan": "e87e08c94c95", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "af054a5fb24a", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "22f665ecfd12", "status": "affected", "versionType": "git"}, {"version": "1da177e4c3f4", "lessThan": "22207fd5c801", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c"], "versions": [{"version": "6.6.24", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.7.12", "lessThanOrEqual": "6.7.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.8.3", "lessThanOrEqual": "6.8.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.9", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605"}, {"url": "https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c"}, {"url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c"}, {"url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e"}], "title": "drm/amdgpu: fix use-after-free bug", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26656", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-04-02T14:54:50.822759Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-05T17:21:23.249Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:07:19.867Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e", "tags": ["x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T00:07:19.867Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-26656", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-04-02T14:54:50.822759Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-05T15:20:38.674Z"}}], "cna": {"title": "drm/amdgpu: fix use-after-free bug", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "1da177e4c3f4", "lessThan": "e87e08c94c95", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "af054a5fb24a", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "22f665ecfd12", "versionType": "git"}, {"status": "affected", "version": "1da177e4c3f4", "lessThan": "22207fd5c801", "versionType": "git"}], "programFiles": ["drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "unaffected", "version": "6.6.24", "versionType": "semver", "lessThanOrEqual": "6.6.*"}, {"status": "unaffected", "version": "6.7.12", "versionType": "semver", "lessThanOrEqual": "6.7.*"}, {"status": "unaffected", "version": "6.8.3", "versionType": "semver", "lessThanOrEqual": "6.8.*"}, {"status": "unaffected", "version": "6.9", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["drivers/gpu/drm/amd/amdgpu/amdgpu_hmm.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605"}, {"url": "https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c"}, {"url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c"}, {"url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix use-after-free bug\n\nThe bug can be triggered by sending a single amdgpu_gem_userptr_ioctl\nto the AMDGPU DRM driver on any ASICs with an invalid address and size.\nThe bug was reported by Joonkyo Jung <joonkyoj@yonsei.ac.kr>.\nFor example the following code:\n\nstatic void Syzkaller1(int fd)\n{\n\tstruct drm_amdgpu_gem_userptr arg;\n\tint ret;\n\n\targ.addr = 0xffffffffffff0000;\n\targ.size = 0x80000000; /*2 Gb*/\n\targ.flags = 0x7;\n\tret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, &arg);\n}\n\nDue to the address and size are not valid there is a failure in\namdgpu_hmm_register->mmu_interval_notifier_insert->__mmu_interval_notifier_insert->\ncheck_shl_overflow, but we even the amdgpu_hmm_register failure we still call\namdgpu_hmm_unregister into amdgpu_gem_object_free which causes access to a bad address.\nThe following stack is below when the issue is reproduced when Kazan is enabled:\n\n[ +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020\n[ +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340\n[ +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff <0f> 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80\n[ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246\n[ +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b\n[ +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260\n[ +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25\n[ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00\n[ +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260\n[ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000\n[ +0.000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0\n[ +0.000010] Call Trace:\n[ +0.000006] <TASK>\n[ +0.000007] ? show_regs+0x6a/0x80\n[ +0.000018] ? __warn+0xa5/0x1b0\n[ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340\n[ +0.000018] ? report_bug+0x24a/0x290\n[ +0.000022] ? handle_bug+0x46/0x90\n[ +0.000015] ? exc_invalid_op+0x19/0x50\n[ +0.000016] ? asm_exc_invalid_op+0x1b/0x20\n[ +0.000017] ? kasan_save_stack+0x26/0x50\n[ +0.000017] ? mmu_interval_notifier_remove+0x23b/0x340\n[ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340\n[ +0.000019] ? mmu_interval_notifier_remove+0x23b/0x340\n[ +0.000020] ? __pfx_mmu_interval_notifier_remove+0x10/0x10\n[ +0.000017] ? kasan_save_alloc_info+0x1e/0x30\n[ +0.000018] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? __kasan_kmalloc+0xb1/0xc0\n[ +0.000018] ? srso_return_thunk+0x5/0x5f\n[ +0.000013] ? __kasan_check_read+0x11/0x20\n[ +0.000020] amdgpu_hmm_unregister+0x34/0x50 [amdgpu]\n[ +0.004695] amdgpu_gem_object_free+0x66/0xa0 [amdgpu]\n[ +0.004534] ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu]\n[ +0.004291] ? do_syscall_64+0x5f/0xe0\n[ +0.000023] ? srso_return_thunk+0x5/0x5f\n[ +0.000017] drm_gem_object_free+0x3b/0x50 [drm]\n[ +0.000489] amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu]\n[ +0.004295] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004270] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? __this_cpu_preempt_check+0x13/0x20\n[ +0.000015] ? srso_return_thunk+0x5/0x5f\n[ +0.000013] ? sysvec_apic_timer_interrupt+0x57/0xc0\n[ +0.000020] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20\n[ +0.000022] ? drm_ioctl_kernel+0x17b/0x1f0 [drm]\n[ +0.000496] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004272] ? drm_ioctl_kernel+0x190/0x1f0 [drm]\n[ +0.000492] drm_ioctl_kernel+0x140/0x1f0 [drm]\n[ +0.000497] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004297] ? __pfx_drm_ioctl_kernel+0x10/0x10 [d\n---truncated---"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:13:19.284Z"}}}, "cveMetadata": {"cveId": "CVE-2024-26656", "state": "PUBLISHED", "dateUpdated": "2024-11-05T09:13:19.284Z", "dateReserved": "2024-02-19T14:20:24.145Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-04-02T06:08:43.558Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix use-after-free bug\n\nThe bug can be triggered by sending a single amdgpu_gem_userptr_ioctl\nto the AMDGPU DRM driver on any ASICs with an invalid address and size.\nThe bug was reported by Joonkyo Jung <joonkyoj@yonsei.ac.kr>.\nFor example the following code:\n\nstatic void Syzkaller1(int fd)\n{\n\tstruct drm_amdgpu_gem_userptr arg;\n\tint ret;\n\n\targ.addr = 0xffffffffffff0000;\n\targ.size = 0x80000000; /*2 Gb*/\n\targ.flags = 0x7;\n\tret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, &arg);\n}\n\nDue to the address and size are not valid there is a failure in\namdgpu_hmm_register->mmu_interval_notifier_insert->__mmu_interval_notifier_insert->\ncheck_shl_overflow, but we even the amdgpu_hmm_register failure we still call\namdgpu_hmm_unregister into amdgpu_gem_object_free which causes access to a bad address.\nThe following stack is below when the issue is reproduced when Kazan is enabled:\n\n[ +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020\n[ +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340\n[ +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff <0f> 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80\n[ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246\n[ +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b\n[ +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260\n[ +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25\n[ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00\n[ +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260\n[ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000\n[ +0.000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0\n[ +0.000010] Call Trace:\n[ +0.000006] <TASK>\n[ +0.000007] ? show_regs+0x6a/0x80\n[ +0.000018] ? __warn+0xa5/0x1b0\n[ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340\n[ +0.000018] ? report_bug+0x24a/0x290\n[ +0.000022] ? handle_bug+0x46/0x90\n[ +0.000015] ? exc_invalid_op+0x19/0x50\n[ +0.000016] ? asm_exc_invalid_op+0x1b/0x20\n[ +0.000017] ? kasan_save_stack+0x26/0x50\n[ +0.000017] ? mmu_interval_notifier_remove+0x23b/0x340\n[ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340\n[ +0.000019] ? mmu_interval_notifier_remove+0x23b/0x340\n[ +0.000020] ? __pfx_mmu_interval_notifier_remove+0x10/0x10\n[ +0.000017] ? kasan_save_alloc_info+0x1e/0x30\n[ +0.000018] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? __kasan_kmalloc+0xb1/0xc0\n[ +0.000018] ? srso_return_thunk+0x5/0x5f\n[ +0.000013] ? __kasan_check_read+0x11/0x20\n[ +0.000020] amdgpu_hmm_unregister+0x34/0x50 [amdgpu]\n[ +0.004695] amdgpu_gem_object_free+0x66/0xa0 [amdgpu]\n[ +0.004534] ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu]\n[ +0.004291] ? do_syscall_64+0x5f/0xe0\n[ +0.000023] ? srso_return_thunk+0x5/0x5f\n[ +0.000017] drm_gem_object_free+0x3b/0x50 [drm]\n[ +0.000489] amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu]\n[ +0.004295] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004270] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? __this_cpu_preempt_check+0x13/0x20\n[ +0.000015] ? srso_return_thunk+0x5/0x5f\n[ +0.000013] ? sysvec_apic_timer_interrupt+0x57/0xc0\n[ +0.000020] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20\n[ +0.000022] ? drm_ioctl_kernel+0x17b/0x1f0 [drm]\n[ +0.000496] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004272] ? drm_ioctl_kernel+0x190/0x1f0 [drm]\n[ +0.000492] drm_ioctl_kernel+0x140/0x1f0 [drm]\n[ +0.000497] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004297] ? __pfx_drm_ioctl_kernel+0x10/0x10 [d\n---truncated---"}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: drm/amdgpu: corrige el error de use-after-free. El error se puede activar enviando un solo amdgpu_gem_userptr_ioctl al controlador DRM AMDGPU en cualquier ASIC con una direcci\u00f3n y tama\u00f1o no v\u00e1lidos. El error fue reportado por Joonkyo Jung . Por ejemplo, el siguiente c\u00f3digo: static void Syzkaller1(int fd) { struct drm_amdgpu_gem_userptr arg; ret int; arg.addr = 0xffffffffffff0000; arg.tama\u00f1o = 0x80000000; /*2 Gb*/ arg.flags = 0x7; ret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, &amp;arg); } Debido a que la direcci\u00f3n y el tama\u00f1o no son v\u00e1lidos, hay una falla en amdgpu_hmm_register-&gt;mmu_interval_notifier_insert-&gt;__mmu_interval_notifier_insert-&gt; check_shl_overflow, pero incluso en la falla de amdgpu_hmm_register todav\u00eda llamamos a amdgpu_hmm_unregister en amdgpu_gem_object_free, lo que provoca el acceso a una direcci\u00f3n incorrecta. La siguiente pila se muestra a continuaci\u00f3n cuando el problema se reproduce cuando Kazan est\u00e1 habilitado: [+0.000014] Nombre del hardware: Nombre del producto del sistema ASUS/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 03/12/2020 [+0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340 [ +0.000017] C\u00f3digo: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff &lt;0f&gt; 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80 [ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246 [ +0.000 013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b [ +0.000011] RDX: dffffc0000000000 RSI: 00000000000000004 RDI: ffff8881a9f78260 [ +0.000010] RBP: ffffc90002 657a70 R08: 0000000000000001 R09: fffff520004caf25 [ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00 [ +0.000010] R1 3 : ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260 [ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:000000000 0000000 [ +0,000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ +0,000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0 [+0.000010] Seguimiento de llamadas: [+0.000006] [+0.000007] ? show_regs+0x6a/0x80 [+0.000018]? __advertir+0xa5/0x1b0 [ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340 [+0.000018]? report_bug+0x24a/0x290 [+0.000022] ? handle_bug+0x46/0x90 [+0.000015]? exc_invalid_op+0x19/0x50 [+0.000016]? asm_exc_invalid_op+0x1b/0x20 [+0.000017]? kasan_save_stack+0x26/0x50 [+0.000017]? mmu_interval_notifier_remove+0x23b/0x340 [+0.000019]? mmu_interval_notifier_remove+0x327/0x340 [+0.000019]? mmu_interval_notifier_remove+0x23b/0x340 [+0.000020]? __pfx_mmu_interval_notifier_remove+0x10/0x10 [ +0.000017] ? kasan_save_alloc_info+0x1e/0x30 [ +0.000018] ? srso_return_thunk+0x5/0x5f [+0.000014]? __kasan_kmalloc+0xb1/0xc0 [ +0.000018] ? srso_return_thunk+0x5/0x5f [+0.000013]? __kasan_check_read+0x11/0x20 [ +0.000020] amdgpu_hmm_unregister+0x34/0x50 [amdgpu] [ +0.004695] amdgpu_gem_object_free+0x66/0xa0 [amdgpu] [ +0.004534] ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu] [ +0.004291] ? do_syscall_64+0x5f/0xe0 [+0.000023]? srso_return_thunk+0x5/0x5f [ +0.000017] drm_gem_object_free+0x3b/0x50 [drm] [ +0.000489] amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu] [ +0.004295] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004270] ? srso_return_thunk+0x5/0x5f [+0.000014]? __this_cpu_preempt_check+0x13/0x20 [ +0.000015] ? srso_return_thunk+0x5/0x5f [+0.000013]? sysvec_apic_timer_interrupt+0x57/0xc0 [+0.000020]? srso_return_thunk+0x5/0x5f [+0.000014]? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [+0.000022]? drm_ioctl_kernel+0x17b/0x1f0 [drm] [ +0.000496] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004272] ? drm_ioctl_kernel+0x190/0x1f0 [drm] [ +0.000492] drm_ioctl_kernel+0x140/0x1f0 [drm] [ +0.000497] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu] [ +0.004297] ? __pfx_drm_ioctl_kernel+0x10/0x10 [d ---truncado---"}], "id": "CVE-2024-26656", "lastModified": "2024-11-21T09:02:46.717", "metrics": {}, "published": "2024-04-02T07:15:42.760", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/22207fd5c80177b860279653d017474b2812af5e"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/22f665ecfd1225afa1309ace623157d12bb9bb0c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/af054a5fb24a144f99895afce9519d709891894c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://git.kernel.org/stable/c/e87e08c94c9541b4e18c4c13f2f605935f512605"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"affected_release": [{"advisory": "RHSA-2024:4352", "cpe": "cpe:/a:redhat:enterprise_linux:8::nfv", "package": "kernel-rt-0:4.18.0-553.8.1.rt7.349.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-08T00:00:00Z"}, {"advisory": "RHSA-2024:4211", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "kernel-0:4.18.0-553.8.1.el8_10", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2024-07-02T00:00:00Z"}, {"advisory": "RHSA-2024:9500", "cpe": "cpe:/o:redhat:rhel_aus:8.6", "package": "kernel-0:4.18.0-372.129.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "release_date": "2024-11-13T00:00:00Z"}, {"advisory": "RHSA-2024:9500", "cpe": "cpe:/o:redhat:rhel_tus:8.6", "package": "kernel-0:4.18.0-372.129.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "release_date": "2024-11-13T00:00:00Z"}, {"advisory": "RHSA-2024:9500", "cpe": "cpe:/o:redhat:rhel_e4s:8.6", "package": "kernel-0:4.18.0-372.129.1.el8_6", "product_name": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "release_date": "2024-11-13T00:00:00Z"}, {"advisory": "RHSA-2024:4740", "cpe": "cpe:/o:redhat:rhel_eus:8.8", "package": "kernel-0:4.18.0-477.64.1.el8_8", "product_name": "Red Hat Enterprise Linux 8.8 Extended Update Support", "release_date": "2024-07-23T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/a:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9315", "cpe": "cpe:/o:redhat:enterprise_linux:9", "package": "kernel-0:5.14.0-503.11.1.el9_5", "product_name": "Red Hat Enterprise Linux 9", "release_date": "2024-11-12T00:00:00Z"}, {"advisory": "RHSA-2024:9497", "cpe": "cpe:/a:redhat:rhel_eus:9.2", "package": "kernel-0:5.14.0-284.92.1.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-11-13T00:00:00Z"}, {"advisory": "RHSA-2024:9498", "cpe": "cpe:/a:redhat:rhel_eus:9.2::nfv", "package": "kernel-rt-0:5.14.0-284.92.1.rt14.377.el9_2", "product_name": "Red Hat Enterprise Linux 9.2 Extended Update Support", "release_date": "2024-11-13T00:00:00Z"}, {"advisory": "RHSA-2024:9546", "cpe": "cpe:/a:redhat:rhel_eus:9.4", "package": "kernel-0:5.14.0-427.44.1.el9_4", "product_name": "Red Hat Enterprise Linux 9.4 Extended Update Support", "release_date": "2024-11-13T00:00:00Z"}], "bugzilla": {"description": "kernel: drm/amdgpu: use-after-free vulnerability", "id": "2272692", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2272692"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "verified"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\ndrm/amdgpu: fix use-after-free bug\nThe bug can be triggered by sending a single amdgpu_gem_userptr_ioctl\nto the AMDGPU DRM driver on any ASICs with an invalid address and size.\nThe bug was reported by Joonkyo Jung <joonkyoj@yonsei.ac.kr>.\nFor example the following code:\nstatic void Syzkaller1(int fd)\n{\nstruct drm_amdgpu_gem_userptr arg;\nint ret;\narg.addr = 0xffffffffffff0000;\narg.size = 0x80000000; /*2 Gb*/\narg.flags = 0x7;\nret = drmIoctl(fd, 0xc1186451/*amdgpu_gem_userptr_ioctl*/, &arg);\n}\nDue to the address and size are not valid there is a failure in\namdgpu_hmm_register->mmu_interval_notifier_insert->__mmu_interval_notifier_insert->\ncheck_shl_overflow, but we even the amdgpu_hmm_register failure we still call\namdgpu_hmm_unregister into amdgpu_gem_object_free which causes access to a bad address.\nThe following stack is below when the issue is reproduced when Kazan is enabled:\n[ +0.000014] Hardware name: ASUS System Product Name/ROG STRIX B550-F GAMING (WI-FI), BIOS 1401 12/03/2020\n[ +0.000009] RIP: 0010:mmu_interval_notifier_remove+0x327/0x340\n[ +0.000017] Code: ff ff 49 89 44 24 08 48 b8 00 01 00 00 00 00 ad de 4c 89 f7 49 89 47 40 48 83 c0 22 49 89 47 48 e8 ce d1 2d 01 e9 32 ff ff ff <0f> 0b e9 16 ff ff ff 4c 89 ef e8 fa 14 b3 ff e9 36 ff ff ff e8 80\n[ +0.000014] RSP: 0018:ffffc90002657988 EFLAGS: 00010246\n[ +0.000013] RAX: 0000000000000000 RBX: 1ffff920004caf35 RCX: ffffffff8160565b\n[ +0.000011] RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff8881a9f78260\n[ +0.000010] RBP: ffffc90002657a70 R08: 0000000000000001 R09: fffff520004caf25\n[ +0.000010] R10: 0000000000000003 R11: ffffffff8161d1d6 R12: ffff88810e988c00\n[ +0.000010] R13: ffff888126fb5a00 R14: ffff88810e988c0c R15: ffff8881a9f78260\n[ +0.000011] FS: 00007ff9ec848540(0000) GS:ffff8883cc880000(0000) knlGS:0000000000000000\n[ +0.000012] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n[ +0.000010] CR2: 000055b3f7e14328 CR3: 00000001b5770000 CR4: 0000000000350ef0\n[ +0.000010] Call Trace:\n[ +0.000006] <TASK>\n[ +0.000007] ? show_regs+0x6a/0x80\n[ +0.000018] ? __warn+0xa5/0x1b0\n[ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340\n[ +0.000018] ? report_bug+0x24a/0x290\n[ +0.000022] ? handle_bug+0x46/0x90\n[ +0.000015] ? exc_invalid_op+0x19/0x50\n[ +0.000016] ? asm_exc_invalid_op+0x1b/0x20\n[ +0.000017] ? kasan_save_stack+0x26/0x50\n[ +0.000017] ? mmu_interval_notifier_remove+0x23b/0x340\n[ +0.000019] ? mmu_interval_notifier_remove+0x327/0x340\n[ +0.000019] ? mmu_interval_notifier_remove+0x23b/0x340\n[ +0.000020] ? __pfx_mmu_interval_notifier_remove+0x10/0x10\n[ +0.000017] ? kasan_save_alloc_info+0x1e/0x30\n[ +0.000018] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? __kasan_kmalloc+0xb1/0xc0\n[ +0.000018] ? srso_return_thunk+0x5/0x5f\n[ +0.000013] ? __kasan_check_read+0x11/0x20\n[ +0.000020] amdgpu_hmm_unregister+0x34/0x50 [amdgpu]\n[ +0.004695] amdgpu_gem_object_free+0x66/0xa0 [amdgpu]\n[ +0.004534] ? __pfx_amdgpu_gem_object_free+0x10/0x10 [amdgpu]\n[ +0.004291] ? do_syscall_64+0x5f/0xe0\n[ +0.000023] ? srso_return_thunk+0x5/0x5f\n[ +0.000017] drm_gem_object_free+0x3b/0x50 [drm]\n[ +0.000489] amdgpu_gem_userptr_ioctl+0x306/0x500 [amdgpu]\n[ +0.004295] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004270] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? __this_cpu_preempt_check+0x13/0x20\n[ +0.000015] ? srso_return_thunk+0x5/0x5f\n[ +0.000013] ? sysvec_apic_timer_interrupt+0x57/0xc0\n[ +0.000020] ? srso_return_thunk+0x5/0x5f\n[ +0.000014] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20\n[ +0.000022] ? drm_ioctl_kernel+0x17b/0x1f0 [drm]\n[ +0.000496] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004272] ? drm_ioctl_kernel+0x190/0x1f0 [drm]\n[ +0.000492] drm_ioctl_kernel+0x140/0x1f0 [drm]\n[ +0.000497] ? __pfx_amdgpu_gem_userptr_ioctl+0x10/0x10 [amdgpu]\n[ +0.004297] ? __pfx_drm_ioctl_kernel+0x10/0x10 [d\n---truncated---", "A failure flaw was found in the Linux kernel\u2019s AMDGPU driver in how a user sends ioctl with an invalid address and size when using the AMD GPU. This flaw allows a local user to crash the system."], "name": "CVE-2024-26656", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-04-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-26656\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-26656\nhttps://lore.kernel.org/linux-cve-announce/2024040247-CVE-2024-26656-ffaa@gregkh/T"], "threat_severity": "Moderate", "upstream_fix": "kernel 6.9-rc1"}