{"dataType": "CVE_RECORD", "dataVersion": "5.1", "cveMetadata": {"cveId": "CVE-2024-42111", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-07-29T15:50:41.176Z", "datePublished": "2024-07-30T07:46:05.570Z", "dateUpdated": "2024-11-05T09:37:37.602Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:37:37.602Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: always do the basic checks for btrfs_qgroup_inherit structure\n\n[BUG]\nSyzbot reports the following regression detected by KASAN:\n\n BUG: KASAN: slab-out-of-bounds in btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277\n Read of size 8 at addr ffff88814628ca50 by task syz-executor318/5171\n\n CPU: 0 PID: 5171 Comm: syz-executor318 Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\n Call Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277\n create_pending_snapshot+0x1359/0x29b0 fs/btrfs/transaction.c:1854\n create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1922\n btrfs_commit_transaction+0xf20/0x3740 fs/btrfs/transaction.c:2382\n create_snapshot+0x6a1/0x9e0 fs/btrfs/ioctl.c:875\n btrfs_mksubvol+0x58f/0x710 fs/btrfs/ioctl.c:1029\n btrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1075\n __btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c:1340\n btrfs_ioctl_snap_create_v2+0x1f2/0x3a0 fs/btrfs/ioctl.c:1422\n btrfs_ioctl+0x99e/0xc60\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:907 [inline]\n __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n RIP: 0033:0x7fcbf1992509\n RSP: 002b:00007fcbf1928218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\n RAX: ffffffffffffffda RBX: 00007fcbf1a1f618 RCX: 00007fcbf1992509\n RDX: 0000000020000280 RSI: 0000000050009417 RDI: 0000000000000003\n RBP: 00007fcbf1a1f610 R08: 00007ffea1298e97 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcbf19eb660\n R13: 00000000200002b8 R14: 00007fcbf19e60c0 R15: 0030656c69662f2e\n </TASK>\n\nAnd it also pinned it down to commit b5357cb268c4 (\"btrfs: qgroup: do not\ncheck qgroup inherit if qgroup is disabled\").\n\n[CAUSE]\nThat offending commit skips the whole qgroup inherit check if qgroup is\nnot enabled.\n\nBut that also skips the very basic checks like\nnum_ref_copies/num_excl_copies and the structure size checks.\n\nMeaning if a qgroup enable/disable race is happening at the background,\nand we pass a btrfs_qgroup_inherit structure when the qgroup is\ndisabled, the check would be completely skipped.\n\nThen at the time of transaction commitment, qgroup is re-enabled and\nbtrfs_qgroup_inherit() is going to use the incorrect structure and\ncausing the above KASAN error.\n\n[FIX]\nMake btrfs_qgroup_check_inherit() only skip the source qgroup checks.\nSo that even if invalid btrfs_qgroup_inherit structure is passed in, we\ncan still reject invalid ones no matter if qgroup is enabled or not.\n\nFurthermore we do already have an extra safety inside\nbtrfs_qgroup_inherit(), which would just ignore invalid qgroup sources,\nso even if we only skip the qgroup source check we're still safe."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/qgroup.c"], "versions": [{"version": "b5357cb268c4", "lessThan": "ebe5ea02577b", "status": "affected", "versionType": "git"}, {"version": "b5357cb268c4", "lessThan": "724d8042cef8", "status": "affected", "versionType": "git"}]}, {"product": "Linux", "vendor": "Linux", "defaultStatus": "affected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/qgroup.c"], "versions": [{"version": "6.9", "status": "affected"}, {"version": "0", "lessThan": "6.9", "status": "unaffected", "versionType": "semver"}, {"version": "6.9.9", "lessThanOrEqual": "6.9.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.10", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "references": [{"url": "https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56"}, {"url": "https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b"}], "title": "btrfs: always do the basic checks for btrfs_qgroup_inherit structure", "x_generator": {"engine": "bippy-9e1c9544281a"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:54:32.553Z"}, "title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-42111", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:17:29.663997Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T17:33:06.663Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56", "tags": ["x_transferred"]}, {"url": "https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T04:54:32.553Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2024-42111", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-09-10T16:17:29.663997Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-09-11T12:42:14.576Z"}}], "cna": {"title": "btrfs: always do the basic checks for btrfs_qgroup_inherit structure", "affected": [{"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "b5357cb268c4", "lessThan": "ebe5ea02577b", "versionType": "git"}, {"status": "affected", "version": "b5357cb268c4", "lessThan": "724d8042cef8", "versionType": "git"}], "programFiles": ["fs/btrfs/qgroup.c"], "defaultStatus": "unaffected"}, {"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "product": "Linux", "versions": [{"status": "affected", "version": "6.9"}, {"status": "unaffected", "version": "0", "lessThan": "6.9", "versionType": "semver"}, {"status": "unaffected", "version": "6.9.9", "versionType": "semver", "lessThanOrEqual": "6.9.*"}, {"status": "unaffected", "version": "6.10", "versionType": "original_commit_for_fix", "lessThanOrEqual": "*"}], "programFiles": ["fs/btrfs/qgroup.c"], "defaultStatus": "affected"}], "references": [{"url": "https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56"}, {"url": "https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b"}], "x_generator": {"engine": "bippy-9e1c9544281a"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: always do the basic checks for btrfs_qgroup_inherit structure\n\n[BUG]\nSyzbot reports the following regression detected by KASAN:\n\n BUG: KASAN: slab-out-of-bounds in btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277\n Read of size 8 at addr ffff88814628ca50 by task syz-executor318/5171\n\n CPU: 0 PID: 5171 Comm: syz-executor318 Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\n Call Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277\n create_pending_snapshot+0x1359/0x29b0 fs/btrfs/transaction.c:1854\n create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1922\n btrfs_commit_transaction+0xf20/0x3740 fs/btrfs/transaction.c:2382\n create_snapshot+0x6a1/0x9e0 fs/btrfs/ioctl.c:875\n btrfs_mksubvol+0x58f/0x710 fs/btrfs/ioctl.c:1029\n btrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1075\n __btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c:1340\n btrfs_ioctl_snap_create_v2+0x1f2/0x3a0 fs/btrfs/ioctl.c:1422\n btrfs_ioctl+0x99e/0xc60\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:907 [inline]\n __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n RIP: 0033:0x7fcbf1992509\n RSP: 002b:00007fcbf1928218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\n RAX: ffffffffffffffda RBX: 00007fcbf1a1f618 RCX: 00007fcbf1992509\n RDX: 0000000020000280 RSI: 0000000050009417 RDI: 0000000000000003\n RBP: 00007fcbf1a1f610 R08: 00007ffea1298e97 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcbf19eb660\n R13: 00000000200002b8 R14: 00007fcbf19e60c0 R15: 0030656c69662f2e\n </TASK>\n\nAnd it also pinned it down to commit b5357cb268c4 (\"btrfs: qgroup: do not\ncheck qgroup inherit if qgroup is disabled\").\n\n[CAUSE]\nThat offending commit skips the whole qgroup inherit check if qgroup is\nnot enabled.\n\nBut that also skips the very basic checks like\nnum_ref_copies/num_excl_copies and the structure size checks.\n\nMeaning if a qgroup enable/disable race is happening at the background,\nand we pass a btrfs_qgroup_inherit structure when the qgroup is\ndisabled, the check would be completely skipped.\n\nThen at the time of transaction commitment, qgroup is re-enabled and\nbtrfs_qgroup_inherit() is going to use the incorrect structure and\ncausing the above KASAN error.\n\n[FIX]\nMake btrfs_qgroup_check_inherit() only skip the source qgroup checks.\nSo that even if invalid btrfs_qgroup_inherit structure is passed in, we\ncan still reject invalid ones no matter if qgroup is enabled or not.\n\nFurthermore we do already have an extra safety inside\nbtrfs_qgroup_inherit(), which would just ignore invalid qgroup sources,\nso even if we only skip the qgroup source check we're still safe."}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2024-11-05T09:37:37.602Z"}}}, "cveMetadata": {"cveId": "CVE-2024-42111", "state": "PUBLISHED", "dateUpdated": "2024-11-05T09:37:37.602Z", "dateReserved": "2024-07-29T15:50:41.176Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-07-30T07:46:05.570Z", "assignerShortName": "Linux"}, "dataVersion": "5.1"}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: always do the basic checks for btrfs_qgroup_inherit structure\n\n[BUG]\nSyzbot reports the following regression detected by KASAN:\n\n BUG: KASAN: slab-out-of-bounds in btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277\n Read of size 8 at addr ffff88814628ca50 by task syz-executor318/5171\n\n CPU: 0 PID: 5171 Comm: syz-executor318 Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0\n Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\n Call Trace:\n <TASK>\n __dump_stack lib/dump_stack.c:88 [inline]\n dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\n print_address_description mm/kasan/report.c:377 [inline]\n print_report+0x169/0x550 mm/kasan/report.c:488\n kasan_report+0x143/0x180 mm/kasan/report.c:601\n btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277\n create_pending_snapshot+0x1359/0x29b0 fs/btrfs/transaction.c:1854\n create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1922\n btrfs_commit_transaction+0xf20/0x3740 fs/btrfs/transaction.c:2382\n create_snapshot+0x6a1/0x9e0 fs/btrfs/ioctl.c:875\n btrfs_mksubvol+0x58f/0x710 fs/btrfs/ioctl.c:1029\n btrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1075\n __btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c:1340\n btrfs_ioctl_snap_create_v2+0x1f2/0x3a0 fs/btrfs/ioctl.c:1422\n btrfs_ioctl+0x99e/0xc60\n vfs_ioctl fs/ioctl.c:51 [inline]\n __do_sys_ioctl fs/ioctl.c:907 [inline]\n __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893\n do_syscall_x64 arch/x86/entry/common.c:52 [inline]\n do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n RIP: 0033:0x7fcbf1992509\n RSP: 002b:00007fcbf1928218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\n RAX: ffffffffffffffda RBX: 00007fcbf1a1f618 RCX: 00007fcbf1992509\n RDX: 0000000020000280 RSI: 0000000050009417 RDI: 0000000000000003\n RBP: 00007fcbf1a1f610 R08: 00007ffea1298e97 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcbf19eb660\n R13: 00000000200002b8 R14: 00007fcbf19e60c0 R15: 0030656c69662f2e\n </TASK>\n\nAnd it also pinned it down to commit b5357cb268c4 (\"btrfs: qgroup: do not\ncheck qgroup inherit if qgroup is disabled\").\n\n[CAUSE]\nThat offending commit skips the whole qgroup inherit check if qgroup is\nnot enabled.\n\nBut that also skips the very basic checks like\nnum_ref_copies/num_excl_copies and the structure size checks.\n\nMeaning if a qgroup enable/disable race is happening at the background,\nand we pass a btrfs_qgroup_inherit structure when the qgroup is\ndisabled, the check would be completely skipped.\n\nThen at the time of transaction commitment, qgroup is re-enabled and\nbtrfs_qgroup_inherit() is going to use the incorrect structure and\ncausing the above KASAN error.\n\n[FIX]\nMake btrfs_qgroup_check_inherit() only skip the source qgroup checks.\nSo that even if invalid btrfs_qgroup_inherit structure is passed in, we\ncan still reject invalid ones no matter if qgroup is enabled or not.\n\nFurthermore we do already have an extra safety inside\nbtrfs_qgroup_inherit(), which would just ignore invalid qgroup sources,\nso even if we only skip the qgroup source check we're still safe."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: siempre haga las comprobaciones b\u00e1sicas de la estructura btrfs_qgroup_inherit [ERROR] Syzbot informa la siguiente regresi\u00f3n detectada por KASAN: ERROR: KASAN: slab-out-of-bounds in btrfs_qgroup_inherit+0x42e/ 0x2e20 fs/btrfs/qgroup.c:3277 Lectura de tama\u00f1o 8 en la direcci\u00f3n ffff88814628ca50 por tarea syz-executor318/5171 CPU: 0 PID: 5171 Comm: syz-executor318 No contaminado 6.10.0-rc2-syzkaller-00010-g2ab7951410 95 #0 Nombre del hardware: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/04/2024 Seguimiento de llamadas: __dump_stack lib/dump_stack.c:88 [en l\u00ednea] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114 print_address_description mm /kasan/report.c:377 [en l\u00ednea] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup. c:3277 create_pending_snapshot+0x1359/0x29b0 fs/btrfs/transaction.c:1854 create_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1922 btrfs_commit_transaction+0xf20/0x3740 fs/btrfs/transaction.c:23 82 create_snapshot+0x6a1/0x9e0 fs/btrfs/ioctl.c:875 btrfs_mksubvol+0x58f/0x710 fs/btrfs/ioctl.c:1029 btrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1075 __btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c: 1340 btrfs_ioctl_snap_create_v2+0x1f2/0x3a0 fs/btrfs/ioctl.c:1422 btrfs_ioctl+0x99e/0xc60 vfs_ioctl fs/ioctl.c:51 [en l\u00ednea] __do_sys_ioctl fs/ioctl.c:907 [en l\u00ednea] __se_sys_ioctl+0xfc/0x170 fs/ioctl .c:893 do_syscall_x64 arch/x86/entry/common.c:52 [en l\u00ednea] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 Entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fcbf1992509 RSP: 002b:00007fcbf1928218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fcbf1a1f618 RCX: 00007fcbf1992509 RDX: 0000000020000280 RSI: 0000000050 009417 RDI: 0000000000000003 RBP: 00007fcbf1a1f610 R08: 00007ffea1298e97 R09: 00000000000000000 R10: 0000000000000000 R11: 00000000000000 246 R12: 00007fcbf19eb660 R13: 00000000200002b8 R14: 00007fcbf19e60c0 R15: 0030656c69662f2e Y tambi\u00e9n lo fij\u00f3 para confirmar b5357cb268c4 (\"btrfs: qgroup: no marque la herencia de qgroup si qgroup est\u00e1 deshabilitado\"). [CAUSA] Esa confirmaci\u00f3n infractora omite toda la verificaci\u00f3n de herencia de qgroup si qgroup no est\u00e1 habilitado. Pero eso tambi\u00e9n omite las comprobaciones m\u00e1s b\u00e1sicas como num_ref_copies/num_excl_copies y las comprobaciones del tama\u00f1o de la estructura. Es decir, si se produce una carrera de habilitaci\u00f3n/deshabilitaci\u00f3n de qgroup en segundo plano y pasamos una estructura btrfs_qgroup_inherit cuando qgroup est\u00e1 deshabilitado, la verificaci\u00f3n se omitir\u00e1 por completo. Luego, en el momento del compromiso de la transacci\u00f3n, qgroup se vuelve a habilitar y btrfs_qgroup_inherit() utilizar\u00e1 la estructura incorrecta y provocar\u00e1 el error KASAN anterior. [FIX] Haga que btrfs_qgroup_check_inherit() solo omita las comprobaciones de qgroup de origen. De modo que incluso si se pasa una estructura btrfs_qgroup_inherit no v\u00e1lida, a\u00fan podemos rechazar las no v\u00e1lidas sin importar si qgroup est\u00e1 habilitado o no. Adem\u00e1s, ya tenemos una seguridad adicional dentro de btrfs_qgroup_inherit(), que simplemente ignorar\u00eda las fuentes de qgroup no v\u00e1lidas, por lo que incluso si solo nos saltamos la verificaci\u00f3n de la fuente de qgroup, todav\u00eda estamos a salvo."}], "id": "CVE-2024-42111", "lastModified": "2024-07-30T13:32:45.943", "metrics": {}, "published": "2024-07-30T08:15:03.563", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/724d8042cef84496ddb4492dc120291f997ae26b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/ebe5ea02577b2c527958af1b76ac472c7ab53a56"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Awaiting Analysis"}

{"bugzilla": {"description": "kernel: btrfs: always do the basic checks for btrfs_qgroup_inherit structure", "id": "2301474", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2301474"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.2", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H", "status": "draft"}, "cwe": "CWE-125", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: always do the basic checks for btrfs_qgroup_inherit structure\n[BUG]\nSyzbot reports the following regression detected by KASAN:\nBUG: KASAN: slab-out-of-bounds in btrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277\nRead of size 8 at addr ffff88814628ca50 by task syz-executor318/5171\nCPU: 0 PID: 5171 Comm: syz-executor318 Not tainted 6.10.0-rc2-syzkaller-00010-g2ab795141095 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024\nCall Trace:\n<TASK>\n__dump_stack lib/dump_stack.c:88 [inline]\ndump_stack_lvl+0x241/0x360 lib/dump_stack.c:114\nprint_address_description mm/kasan/report.c:377 [inline]\nprint_report+0x169/0x550 mm/kasan/report.c:488\nkasan_report+0x143/0x180 mm/kasan/report.c:601\nbtrfs_qgroup_inherit+0x42e/0x2e20 fs/btrfs/qgroup.c:3277\ncreate_pending_snapshot+0x1359/0x29b0 fs/btrfs/transaction.c:1854\ncreate_pending_snapshots+0x195/0x1d0 fs/btrfs/transaction.c:1922\nbtrfs_commit_transaction+0xf20/0x3740 fs/btrfs/transaction.c:2382\ncreate_snapshot+0x6a1/0x9e0 fs/btrfs/ioctl.c:875\nbtrfs_mksubvol+0x58f/0x710 fs/btrfs/ioctl.c:1029\nbtrfs_mksnapshot+0xb5/0xf0 fs/btrfs/ioctl.c:1075\n__btrfs_ioctl_snap_create+0x387/0x4b0 fs/btrfs/ioctl.c:1340\nbtrfs_ioctl_snap_create_v2+0x1f2/0x3a0 fs/btrfs/ioctl.c:1422\nbtrfs_ioctl+0x99e/0xc60\nvfs_ioctl fs/ioctl.c:51 [inline]\n__do_sys_ioctl fs/ioctl.c:907 [inline]\n__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893\ndo_syscall_x64 arch/x86/entry/common.c:52 [inline]\ndo_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\nRIP: 0033:0x7fcbf1992509\nRSP: 002b:00007fcbf1928218 EFLAGS: 00000246 ORIG_RAX: 0000000000000010\nRAX: ffffffffffffffda RBX: 00007fcbf1a1f618 RCX: 00007fcbf1992509\nRDX: 0000000020000280 RSI: 0000000050009417 RDI: 0000000000000003\nRBP: 00007fcbf1a1f610 R08: 00007ffea1298e97 R09: 0000000000000000\nR10: 0000000000000000 R11: 0000000000000246 R12: 00007fcbf19eb660\nR13: 00000000200002b8 R14: 00007fcbf19e60c0 R15: 0030656c69662f2e\n</TASK>\nAnd it also pinned it down to commit b5357cb268c4 (\"btrfs: qgroup: do not\ncheck qgroup inherit if qgroup is disabled\").\n[CAUSE]\nThat offending commit skips the whole qgroup inherit check if qgroup is\nnot enabled.\nBut that also skips the very basic checks like\nnum_ref_copies/num_excl_copies and the structure size checks.\nMeaning if a qgroup enable/disable race is happening at the background,\nand we pass a btrfs_qgroup_inherit structure when the qgroup is\ndisabled, the check would be completely skipped.\nThen at the time of transaction commitment, qgroup is re-enabled and\nbtrfs_qgroup_inherit() is going to use the incorrect structure and\ncausing the above KASAN error.\n[FIX]\nMake btrfs_qgroup_check_inherit() only skip the source qgroup checks.\nSo that even if invalid btrfs_qgroup_inherit structure is passed in, we\ncan still reject invalid ones no matter if qgroup is enabled or not.\nFurthermore we do already have an extra safety inside\nbtrfs_qgroup_inherit(), which would just ignore invalid qgroup sources,\nso even if we only skip the qgroup source check we're still safe."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability."}, "name": "CVE-2024-42111", "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": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "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": "2024-07-30T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-42111\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-42111\nhttps://lore.kernel.org/linux-cve-announce/2024073021-CVE-2024-42111-034c@gregkh/T"], "statement": "Red Hat Enterprise Linux is not impacted by this CVE, as the vulnerability in question does not affect the specific versions or configurations of the Linux kernel used in its distributions. This ensures that users of Red Hat Enterprise Linux are not exposed to the potential risks associated with this issue, and no further action or mitigation is necessary for systems running this operating system.", "threat_severity": "Low", "upstream_fix": "kernel 6.9.9, kernel 6.10"}