{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2021-47341", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-05-21T14:28:16.979Z", "datePublished": "2024-05-21T14:35:49.001Z", "dateUpdated": "2024-11-04T12:04:02.362Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:04:02.362Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio\n\nBUG: KASAN: use-after-free in kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183\nRead of size 8 at addr ffff0000c03a2500 by task syz-executor083/4269\n\nCPU: 5 PID: 4269 Comm: syz-executor083 Not tainted 5.10.0 #7\nHardware name: linux,dummy-virt (DT)\nCall trace:\n dump_backtrace+0x0/0x2d0 arch/arm64/kernel/stacktrace.c:132\n show_stack+0x28/0x34 arch/arm64/kernel/stacktrace.c:196\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0x110/0x164 lib/dump_stack.c:118\n print_address_description+0x78/0x5c8 mm/kasan/report.c:385\n __kasan_report mm/kasan/report.c:545 [inline]\n kasan_report+0x148/0x1e4 mm/kasan/report.c:562\n check_memory_region_inline mm/kasan/generic.c:183 [inline]\n __asan_load8+0xb4/0xbc mm/kasan/generic.c:252\n kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183\n kvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/syscall.c:48 [inline]\n el0_svc_common arch/arm64/kernel/syscall.c:158 [inline]\n do_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220\n el0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367\n el0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383\n el0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670\n\nAllocated by task 4269:\n stack_trace_save+0x80/0xb8 kernel/stacktrace.c:121\n kasan_save_stack mm/kasan/common.c:48 [inline]\n kasan_set_track mm/kasan/common.c:56 [inline]\n __kasan_kmalloc+0xdc/0x120 mm/kasan/common.c:461\n kasan_kmalloc+0xc/0x14 mm/kasan/common.c:475\n kmem_cache_alloc_trace include/linux/slab.h:450 [inline]\n kmalloc include/linux/slab.h:552 [inline]\n kzalloc include/linux/slab.h:664 [inline]\n kvm_vm_ioctl_register_coalesced_mmio+0x78/0x1cc arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:146\n kvm_vm_ioctl+0x7e8/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3746\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/syscall.c:48 [inline]\n el0_svc_common arch/arm64/kernel/syscall.c:158 [inline]\n do_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220\n el0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367\n el0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383\n el0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670\n\nFreed by task 4269:\n stack_trace_save+0x80/0xb8 kernel/stacktrace.c:121\n kasan_save_stack mm/kasan/common.c:48 [inline]\n kasan_set_track+0x38/0x6c mm/kasan/common.c:56\n kasan_set_free_info+0x20/0x40 mm/kasan/generic.c:355\n __kasan_slab_free+0x124/0x150 mm/kasan/common.c:422\n kasan_slab_free+0x10/0x1c mm/kasan/common.c:431\n slab_free_hook mm/slub.c:1544 [inline]\n slab_free_freelist_hook mm/slub.c:1577 [inline]\n slab_free mm/slub.c:3142 [inline]\n kfree+0x104/0x38c mm/slub.c:4124\n coalesced_mmio_destructor+0x94/0xa4 arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:102\n kvm_iodevice_destructor include/kvm/iodev.h:61 [inline]\n kvm_io_bus_unregister_dev+0x248/0x280 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:4374\n kvm_vm_ioctl_unregister_coalesced_mmio+0x158/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:186\n kvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/sys\n---truncated---"}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["virt/kvm/coalesced_mmio.c"], "versions": [{"version": "7d1bc32d6477", "lessThan": "f2ff9d03432f", "status": "affected", "versionType": "git"}, {"version": "2a20592baff5", "lessThan": "679837dc0aba", "status": "affected", "versionType": "git"}, {"version": "50cbad42bfea", "lessThan": "8d7c539316d6", "status": "affected", "versionType": "git"}, {"version": "5d3c4c79384a", "lessThan": "069d44a24c0f", "status": "affected", "versionType": "git"}, {"version": "5d3c4c79384a", "lessThan": "23fa2e46a555", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["virt/kvm/coalesced_mmio.c"], "versions": [{"version": "5.13", "status": "affected"}, {"version": "0", "lessThan": "5.13", "status": "unaffected", "versionType": "semver"}, {"version": "5.4.134", "lessThanOrEqual": "5.4.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.10.52", "lessThanOrEqual": "5.10.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.12.19", "lessThanOrEqual": "5.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.13.4", "lessThanOrEqual": "5.13.*", "status": "unaffected", "versionType": "semver"}, {"version": "5.14", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/f2ff9d03432fcb160e9f7d4be26174d89de2779a"}, {"url": "https://git.kernel.org/stable/c/679837dc0abaa2c6e2a7bcd86483e05eee1d5066"}, {"url": "https://git.kernel.org/stable/c/8d7c539316d652d217e5e82b89ee204c812a7061"}, {"url": "https://git.kernel.org/stable/c/069d44a24c0ff8f85adf49233aae7a8ca16f5c7e"}, {"url": "https://git.kernel.org/stable/c/23fa2e46a5556f787ce2ea1a315d3ab93cced204"}], "title": "KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.601Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/f2ff9d03432fcb160e9f7d4be26174d89de2779a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/679837dc0abaa2c6e2a7bcd86483e05eee1d5066", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8d7c539316d652d217e5e82b89ee204c812a7061", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/069d44a24c0ff8f85adf49233aae7a8ca16f5c7e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/23fa2e46a5556f787ce2ea1a315d3ab93cced204", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47341", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:38:50.302115Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:49.116Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/f2ff9d03432fcb160e9f7d4be26174d89de2779a", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/679837dc0abaa2c6e2a7bcd86483e05eee1d5066", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/8d7c539316d652d217e5e82b89ee204c812a7061", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/069d44a24c0ff8f85adf49233aae7a8ca16f5c7e", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/23fa2e46a5556f787ce2ea1a315d3ab93cced204", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T05:32:08.601Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-47341", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T15:38:50.302115Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:18.923Z"}}], "cna": {"title": "KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "7d1bc32d6477", "lessThan": "f2ff9d03432f", "versionType": "git"}, {"status": "affected", "version": "2a20592baff5", "lessThan": "679837dc0aba", "versionType": "git"}, {"status": "affected", "version": "50cbad42bfea", "lessThan": "8d7c539316d6", "versionType": "git"}, {"status": "affected", "version": "5d3c4c79384a", "lessThan": "069d44a24c0f", "versionType": "git"}, {"status": "affected", "version": "5d3c4c79384a", "lessThan": "23fa2e46a555", "versionType": "git"}], "programFiles": ["virt/kvm/coalesced_mmio.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "5.13"}, {"status": "unaffected", "version": "0", "lessThan": "5.13", "versionType": "semver"}, {"status": "unaffected", "version": "5.4.134", "versionType": "semver", "lessThanOrEqual": "5.4.*"}, {"status": "unaffected", "version": "5.10.52", "versionType": "semver", "lessThanOrEqual": "5.10.*"}, {"status": "unaffected", "version": "5.12.19", "versionType": "semver", "lessThanOrEqual": "5.12.*"}, {"status": "unaffected", "version": "5.13.4", "versionType": "semver", "lessThanOrEqual": "5.13.*"}, {"status": "unaffected", "version": "5.14", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["virt/kvm/coalesced_mmio.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/f2ff9d03432fcb160e9f7d4be26174d89de2779a"}, {"url": "https://git.kernel.org/stable/c/679837dc0abaa2c6e2a7bcd86483e05eee1d5066"}, {"url": "https://git.kernel.org/stable/c/8d7c539316d652d217e5e82b89ee204c812a7061"}, {"url": "https://git.kernel.org/stable/c/069d44a24c0ff8f85adf49233aae7a8ca16f5c7e"}, {"url": "https://git.kernel.org/stable/c/23fa2e46a5556f787ce2ea1a315d3ab93cced204"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio\n\nBUG: KASAN: use-after-free in kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183\nRead of size 8 at addr ffff0000c03a2500 by task syz-executor083/4269\n\nCPU: 5 PID: 4269 Comm: syz-executor083 Not tainted 5.10.0 #7\nHardware name: linux,dummy-virt (DT)\nCall trace:\n dump_backtrace+0x0/0x2d0 arch/arm64/kernel/stacktrace.c:132\n show_stack+0x28/0x34 arch/arm64/kernel/stacktrace.c:196\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0x110/0x164 lib/dump_stack.c:118\n print_address_description+0x78/0x5c8 mm/kasan/report.c:385\n __kasan_report mm/kasan/report.c:545 [inline]\n kasan_report+0x148/0x1e4 mm/kasan/report.c:562\n check_memory_region_inline mm/kasan/generic.c:183 [inline]\n __asan_load8+0xb4/0xbc mm/kasan/generic.c:252\n kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183\n kvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/syscall.c:48 [inline]\n el0_svc_common arch/arm64/kernel/syscall.c:158 [inline]\n do_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220\n el0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367\n el0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383\n el0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670\n\nAllocated by task 4269:\n stack_trace_save+0x80/0xb8 kernel/stacktrace.c:121\n kasan_save_stack mm/kasan/common.c:48 [inline]\n kasan_set_track mm/kasan/common.c:56 [inline]\n __kasan_kmalloc+0xdc/0x120 mm/kasan/common.c:461\n kasan_kmalloc+0xc/0x14 mm/kasan/common.c:475\n kmem_cache_alloc_trace include/linux/slab.h:450 [inline]\n kmalloc include/linux/slab.h:552 [inline]\n kzalloc include/linux/slab.h:664 [inline]\n kvm_vm_ioctl_register_coalesced_mmio+0x78/0x1cc arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:146\n kvm_vm_ioctl+0x7e8/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3746\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/syscall.c:48 [inline]\n el0_svc_common arch/arm64/kernel/syscall.c:158 [inline]\n do_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220\n el0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367\n el0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383\n el0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670\n\nFreed by task 4269:\n stack_trace_save+0x80/0xb8 kernel/stacktrace.c:121\n kasan_save_stack mm/kasan/common.c:48 [inline]\n kasan_set_track+0x38/0x6c mm/kasan/common.c:56\n kasan_set_free_info+0x20/0x40 mm/kasan/generic.c:355\n __kasan_slab_free+0x124/0x150 mm/kasan/common.c:422\n kasan_slab_free+0x10/0x1c mm/kasan/common.c:431\n slab_free_hook mm/slub.c:1544 [inline]\n slab_free_freelist_hook mm/slub.c:1577 [inline]\n slab_free mm/slub.c:3142 [inline]\n kfree+0x104/0x38c mm/slub.c:4124\n coalesced_mmio_destructor+0x94/0xa4 arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:102\n kvm_iodevice_destructor include/kvm/iodev.h:61 [inline]\n kvm_io_bus_unregister_dev+0x248/0x280 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:4374\n kvm_vm_ioctl_unregister_coalesced_mmio+0x158/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:186\n kvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/sys\n---truncated---"}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-04T12:04:02.362Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47341", "state": "PUBLISHED", "dateUpdated": "2024-11-04T12:04:02.362Z", "dateReserved": "2024-05-21T14:28:16.979Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-05-21T14:35:49.001Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio\n\nBUG: KASAN: use-after-free in kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183\nRead of size 8 at addr ffff0000c03a2500 by task syz-executor083/4269\n\nCPU: 5 PID: 4269 Comm: syz-executor083 Not tainted 5.10.0 #7\nHardware name: linux,dummy-virt (DT)\nCall trace:\n dump_backtrace+0x0/0x2d0 arch/arm64/kernel/stacktrace.c:132\n show_stack+0x28/0x34 arch/arm64/kernel/stacktrace.c:196\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0x110/0x164 lib/dump_stack.c:118\n print_address_description+0x78/0x5c8 mm/kasan/report.c:385\n __kasan_report mm/kasan/report.c:545 [inline]\n kasan_report+0x148/0x1e4 mm/kasan/report.c:562\n check_memory_region_inline mm/kasan/generic.c:183 [inline]\n __asan_load8+0xb4/0xbc mm/kasan/generic.c:252\n kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183\n kvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/syscall.c:48 [inline]\n el0_svc_common arch/arm64/kernel/syscall.c:158 [inline]\n do_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220\n el0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367\n el0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383\n el0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670\n\nAllocated by task 4269:\n stack_trace_save+0x80/0xb8 kernel/stacktrace.c:121\n kasan_save_stack mm/kasan/common.c:48 [inline]\n kasan_set_track mm/kasan/common.c:56 [inline]\n __kasan_kmalloc+0xdc/0x120 mm/kasan/common.c:461\n kasan_kmalloc+0xc/0x14 mm/kasan/common.c:475\n kmem_cache_alloc_trace include/linux/slab.h:450 [inline]\n kmalloc include/linux/slab.h:552 [inline]\n kzalloc include/linux/slab.h:664 [inline]\n kvm_vm_ioctl_register_coalesced_mmio+0x78/0x1cc arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:146\n kvm_vm_ioctl+0x7e8/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3746\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/syscall.c:48 [inline]\n el0_svc_common arch/arm64/kernel/syscall.c:158 [inline]\n do_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220\n el0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367\n el0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383\n el0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670\n\nFreed by task 4269:\n stack_trace_save+0x80/0xb8 kernel/stacktrace.c:121\n kasan_save_stack mm/kasan/common.c:48 [inline]\n kasan_set_track+0x38/0x6c mm/kasan/common.c:56\n kasan_set_free_info+0x20/0x40 mm/kasan/generic.c:355\n __kasan_slab_free+0x124/0x150 mm/kasan/common.c:422\n kasan_slab_free+0x10/0x1c mm/kasan/common.c:431\n slab_free_hook mm/slub.c:1544 [inline]\n slab_free_freelist_hook mm/slub.c:1577 [inline]\n slab_free mm/slub.c:3142 [inline]\n kfree+0x104/0x38c mm/slub.c:4124\n coalesced_mmio_destructor+0x94/0xa4 arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:102\n kvm_iodevice_destructor include/kvm/iodev.h:61 [inline]\n kvm_io_bus_unregister_dev+0x248/0x280 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:4374\n kvm_vm_ioctl_unregister_coalesced_mmio+0x158/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:186\n kvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755\n vfs_ioctl fs/ioctl.c:48 [inline]\n __do_sys_ioctl fs/ioctl.c:753 [inline]\n __se_sys_ioctl fs/ioctl.c:739 [inline]\n __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n __invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\n invoke_syscall arch/arm64/kernel/sys\n---truncated---"}, {"lang": "es", "value": "En el kernel de Linux se ha resuelto la siguiente vulnerabilidad: KVM: mmio: Arreglar use-after-free Leer en kvm_vm_ioctl_unregister_coalesced_mmio BUG: KASAN: use-after-free en kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../. ./../virt/kvm/coalesced_mmio.c:183 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff0000c03a2500 por tarea syz-executor083/4269 CPU: 5 PID: 4269 Comm: syz-executor083 Not tainted 5.10.0 #7 Nombre de hardware: linux ,dummy-virt (DT) Seguimiento de llamadas: dump_backtrace+0x0/0x2d0 arch/arm64/kernel/stacktrace.c:132 show_stack+0x28/0x34 arch/arm64/kernel/stacktrace.c:196 __dump_stack lib/dump_stack.c:77 [en l\u00ednea] dump_stack+0x110/0x164 lib/dump_stack.c:118 print_address_description+0x78/0x5c8 mm/kasan/report.c:385 __kasan_report mm/kasan/report.c:545 [en l\u00ednea] kasan_report+0x148/0x1e4 mm/kasan /report.c:562 check_memory_region_inline mm/kasan/generic.c:183 [en l\u00ednea] __asan_load8+0xb4/0xbc mm/kasan/generic.c:252 kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../ ../virt/kvm/coalesced_mmio.c:183 kvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755 vfs_ioctl fs/ioctl.c:48 [ en l\u00ednea] __do_sys_ioctl fs/ioctl.c:753 [en l\u00ednea] __se_sys_ioctl fs/ioctl.c:739 [en l\u00ednea] __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739 __invoke_syscall arch/arm64/kernel/syscall.c:36 [en l\u00ednea ] invoke_syscall arch/arm64/kernel/syscall.c:48 [en l\u00ednea] el0_svc_common arch/arm64/kernel/syscall.c:158 [en l\u00ednea] do_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220 el0_svc+0x1c /0x28 arch/arm64/kernel/entry-common.c:367 el0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383 el0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670 Asignado por tarea 4269: stack_trace_save+0x80/0xb8 kernel/stacktrace.c:121 kasan_save_stack mm/kasan/common.c:48 [en l\u00ednea] kasan_set_track mm/kasan/common.c:56 [en l\u00ednea] __kasan_kmalloc+0xdc/0x120 mm/kasan /common.c:461 kasan_kmalloc+0xc/0x14 mm/kasan/common.c:475 kmem_cache_alloc_trace include/linux/slab.h:450 [en l\u00ednea] kmalloc include/linux/slab.h:552 [en l\u00ednea] kzalloc include/linux /slab.h:664 [en l\u00ednea] kvm_vm_ioctl_register_coalesced_mmio+0x78/0x1cc arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:146 kvm_vm_ioctl+0x7e8/0x14c4 arch/arm64/kvm/. ./../../virt/kvm/kvm_main.c:3746 vfs_ioctl fs/ioctl.c:48 [en l\u00ednea] __do_sys_ioctl fs/ioctl.c:753 [en l\u00ednea] __se_sys_ioctl fs/ioctl.c:739 [en l\u00ednea] __arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739 __invoke_syscall arch/arm64/kernel/syscall.c:36 [en l\u00ednea] invoke_syscall arch/arm64/kernel/syscall.c:48 [en l\u00ednea] el0_svc_common arch/arm64/kernel/syscall .c:158 [en l\u00ednea] do_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220 el0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367 el0_sync_handler+0x98/0x170 arch/arm64/ kernel/entry-common.c:383 el0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670 Liberado por la tarea 4269: stack_trace_save+0x80/0xb8 kernel/stacktrace.c:121 kasan_save_stack mm/kasan/common.c :48 [en l\u00ednea] kasan_set_track+0x38/0x6c mm/kasan/common.c:56 kasan_set_free_info+0x20/0x40 mm/kasan/generic.c:355 __kasan_slab_free+0x124/0x150 mm/kasan/common.c:422 kasan_slab_free+0x10 /0x1c mm/kasan/common.c:431 slab_free_hook mm/slub.c:1544 [en l\u00ednea] slab_free_freelist_hook mm/slub.c:1577 [en l\u00ednea] slab_free mm/slub.c:3142 [en l\u00ednea] kfree+0x104/0x38c mm /slub.c:4124 coalesced_mmio_destructor+0x94/0xa4 arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:102 kvm_iodevice_destructor include/kvm/iodev.h:61 [en l\u00ednea] kvm_io_bus_unregister_dev+ 0x248/0x280 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:4374 kvm_vm_ioctl_unregister_coalesced_mmio+0x158/0x1ec arch/arm64/kvm/../../../virt/kvm /coalesced_mmio.c:186 kvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755 vfs_ioctl fs/ioctl.c:48 [en l\u00ednea] __do_sys_ioctl fs/ioctl .c:753 [en l\u00ednea] __se_sys_ioctl fs/ioctl.c:739 ---truncado---"}], "id": "CVE-2021-47341", "lastModified": "2024-05-21T16:54:26.047", "metrics": {}, "published": "2024-05-21T15:15:20.850", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/069d44a24c0ff8f85adf49233aae7a8ca16f5c7e"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/23fa2e46a5556f787ce2ea1a315d3ab93cced204"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/679837dc0abaa2c6e2a7bcd86483e05eee1d5066"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/8d7c539316d652d217e5e82b89ee204c812a7061"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/f2ff9d03432fcb160e9f7d4be26174d89de2779a"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: KVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio", "id": "2282418", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2282418"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.7", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-416", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nKVM: mmio: Fix use-after-free Read in kvm_vm_ioctl_unregister_coalesced_mmio\nBUG: KASAN: use-after-free in kvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183\nRead of size 8 at addr ffff0000c03a2500 by task syz-executor083/4269\nCPU: 5 PID: 4269 Comm: syz-executor083 Not tainted 5.10.0 #7\nHardware name: linux,dummy-virt (DT)\nCall trace:\ndump_backtrace+0x0/0x2d0 arch/arm64/kernel/stacktrace.c:132\nshow_stack+0x28/0x34 arch/arm64/kernel/stacktrace.c:196\n__dump_stack lib/dump_stack.c:77 [inline]\ndump_stack+0x110/0x164 lib/dump_stack.c:118\nprint_address_description+0x78/0x5c8 mm/kasan/report.c:385\n__kasan_report mm/kasan/report.c:545 [inline]\nkasan_report+0x148/0x1e4 mm/kasan/report.c:562\ncheck_memory_region_inline mm/kasan/generic.c:183 [inline]\n__asan_load8+0xb4/0xbc mm/kasan/generic.c:252\nkvm_vm_ioctl_unregister_coalesced_mmio+0x7c/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:183\nkvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755\nvfs_ioctl fs/ioctl.c:48 [inline]\n__do_sys_ioctl fs/ioctl.c:753 [inline]\n__se_sys_ioctl fs/ioctl.c:739 [inline]\n__arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n__invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\ninvoke_syscall arch/arm64/kernel/syscall.c:48 [inline]\nel0_svc_common arch/arm64/kernel/syscall.c:158 [inline]\ndo_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220\nel0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367\nel0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383\nel0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670\nAllocated by task 4269:\nstack_trace_save+0x80/0xb8 kernel/stacktrace.c:121\nkasan_save_stack mm/kasan/common.c:48 [inline]\nkasan_set_track mm/kasan/common.c:56 [inline]\n__kasan_kmalloc+0xdc/0x120 mm/kasan/common.c:461\nkasan_kmalloc+0xc/0x14 mm/kasan/common.c:475\nkmem_cache_alloc_trace include/linux/slab.h:450 [inline]\nkmalloc include/linux/slab.h:552 [inline]\nkzalloc include/linux/slab.h:664 [inline]\nkvm_vm_ioctl_register_coalesced_mmio+0x78/0x1cc arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:146\nkvm_vm_ioctl+0x7e8/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3746\nvfs_ioctl fs/ioctl.c:48 [inline]\n__do_sys_ioctl fs/ioctl.c:753 [inline]\n__se_sys_ioctl fs/ioctl.c:739 [inline]\n__arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n__invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\ninvoke_syscall arch/arm64/kernel/syscall.c:48 [inline]\nel0_svc_common arch/arm64/kernel/syscall.c:158 [inline]\ndo_el0_svc+0x120/0x290 arch/arm64/kernel/syscall.c:220\nel0_svc+0x1c/0x28 arch/arm64/kernel/entry-common.c:367\nel0_sync_handler+0x98/0x170 arch/arm64/kernel/entry-common.c:383\nel0_sync+0x140/0x180 arch/arm64/kernel/entry.S:670\nFreed by task 4269:\nstack_trace_save+0x80/0xb8 kernel/stacktrace.c:121\nkasan_save_stack mm/kasan/common.c:48 [inline]\nkasan_set_track+0x38/0x6c mm/kasan/common.c:56\nkasan_set_free_info+0x20/0x40 mm/kasan/generic.c:355\n__kasan_slab_free+0x124/0x150 mm/kasan/common.c:422\nkasan_slab_free+0x10/0x1c mm/kasan/common.c:431\nslab_free_hook mm/slub.c:1544 [inline]\nslab_free_freelist_hook mm/slub.c:1577 [inline]\nslab_free mm/slub.c:3142 [inline]\nkfree+0x104/0x38c mm/slub.c:4124\ncoalesced_mmio_destructor+0x94/0xa4 arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:102\nkvm_iodevice_destructor include/kvm/iodev.h:61 [inline]\nkvm_io_bus_unregister_dev+0x248/0x280 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:4374\nkvm_vm_ioctl_unregister_coalesced_mmio+0x158/0x1ec arch/arm64/kvm/../../../virt/kvm/coalesced_mmio.c:186\nkvm_vm_ioctl+0xe30/0x14c4 arch/arm64/kvm/../../../virt/kvm/kvm_main.c:3755\nvfs_ioctl fs/ioctl.c:48 [inline]\n__do_sys_ioctl fs/ioctl.c:753 [inline]\n__se_sys_ioctl fs/ioctl.c:739 [inline]\n__arm64_sys_ioctl+0xf88/0x131c fs/ioctl.c:739\n__invoke_syscall arch/arm64/kernel/syscall.c:36 [inline]\ninvoke_syscall arch/arm64/kernel/sys\n---truncated---"], "mitigation": {"lang": "en:us", "value": "Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible."}, "name": "CVE-2021-47341", "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:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-05-21T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47341\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47341\nhttps://lore.kernel.org/linux-cve-announce/2024052137-CVE-2021-47341-f4e9@gregkh/T"], "statement": "This vulnerability is rated as a moderate severity because it can cause system crashes or instability by accessing invalid memory.", "threat_severity": "Moderate", "upstream_fix": "kernel 5.4.134, kernel 5.10.52, kernel 5.12.19, kernel 5.13.4, kernel 5.14"}