{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-23214", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2026-01-13T15:37:45.987Z", "datePublished": "2026-02-18T14:21:51.507Z", "dateUpdated": "2026-02-20T11:30:59.554Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-02-20T11:30:59.554Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: reject new transactions if the fs is fully read-only\n\n[BUG]\nThere is a bug report where a heavily fuzzed fs is mounted with all\nrescue mount options, which leads to the following warnings during\nunmount:\n\n BTRFS: Transaction aborted (error -22)\n Modules linked in:\n CPU: 0 UID: 0 PID: 9758 Comm: repro.out Not tainted\n 6.19.0-rc5-00002-gb71e635feefc #7 PREEMPT(full)\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n RIP: 0010:find_free_extent_update_loop fs/btrfs/extent-tree.c:4208 [inline]\n RIP: 0010:find_free_extent+0x52f0/0x5d20 fs/btrfs/extent-tree.c:4611\n Call Trace:\n <TASK>\n btrfs_reserve_extent+0x2cd/0x790 fs/btrfs/extent-tree.c:4705\n btrfs_alloc_tree_block+0x1e1/0x10e0 fs/btrfs/extent-tree.c:5157\n btrfs_force_cow_block+0x578/0x2410 fs/btrfs/ctree.c:517\n btrfs_cow_block+0x3c4/0xa80 fs/btrfs/ctree.c:708\n btrfs_search_slot+0xcad/0x2b50 fs/btrfs/ctree.c:2130\n btrfs_truncate_inode_items+0x45d/0x2350 fs/btrfs/inode-item.c:499\n btrfs_evict_inode+0x923/0xe70 fs/btrfs/inode.c:5628\n evict+0x5f4/0xae0 fs/inode.c:837\n __dentry_kill+0x209/0x660 fs/dcache.c:670\n finish_dput+0xc9/0x480 fs/dcache.c:879\n shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1661\n generic_shutdown_super+0x67/0x2c0 fs/super.c:621\n kill_anon_super+0x3b/0x70 fs/super.c:1289\n btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127\n deactivate_locked_super+0xbc/0x130 fs/super.c:474\n cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318\n task_work_run+0x1d4/0x260 kernel/task_work.c:233\n exit_task_work include/linux/task_work.h:40 [inline]\n do_exit+0x694/0x22f0 kernel/exit.c:971\n do_group_exit+0x21c/0x2d0 kernel/exit.c:1112\n __do_sys_exit_group kernel/exit.c:1123 [inline]\n __se_sys_exit_group kernel/exit.c:1121 [inline]\n __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121\n x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xe8/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n RIP: 0033:0x44f639\n Code: Unable to access opcode bytes at 0x44f60f.\n RSP: 002b:00007ffc15c4e088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7\n RAX: ffffffffffffffda RBX: 00000000004c32f0 RCX: 000000000044f639\n RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001\n RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004c32f0\n R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001\n </TASK>\n\nSince rescue mount options will mark the full fs read-only, there should\nbe no new transaction triggered.\n\nBut during unmount we will evict all inodes, which can trigger a new\ntransaction, and triggers warnings on a heavily corrupted fs.\n\n[CAUSE]\nBtrfs allows new transaction even on a read-only fs, this is to allow\nlog replay happen even on read-only mounts, just like what ext4/xfs do.\n\nHowever with rescue mount options, the fs is fully read-only and cannot\nbe remounted read-write, thus in that case we should also reject any new\ntransactions.\n\n[FIX]\nIf we find the fs has rescue mount options, we should treat the fs as\nerror, so that no new transaction can be started."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/disk-io.c", "fs/btrfs/fs.h"], "versions": [{"version": "42437a6386ffeaaf200731e73d723ea491f3fe7d", "lessThan": "a928eecf030a9a5dc5f5ca98332699f379b91963", "status": "affected", "versionType": "git"}, {"version": "42437a6386ffeaaf200731e73d723ea491f3fe7d", "lessThan": "3228b2eceb6c3d7e237f8a5330113dbd164fb90d", "status": "affected", "versionType": "git"}, {"version": "42437a6386ffeaaf200731e73d723ea491f3fe7d", "lessThan": "1972f44c189c8aacde308fa9284e474c1a5cbd9f", "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/disk-io.c", "fs/btrfs/fs.h"], "versions": [{"version": "5.11", "status": "affected"}, {"version": "0", "lessThan": "5.11", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.70", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.18.10", "lessThanOrEqual": "6.18.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.19", "lessThanOrEqual": "*", "status": "unaffected", "versionType": "original_commit_for_fix"}]}], "cpeApplicability": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.12.70"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.18.10"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.11", "versionEndExcluding": "6.19"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/a928eecf030a9a5dc5f5ca98332699f379b91963"}, {"url": "https://git.kernel.org/stable/c/3228b2eceb6c3d7e237f8a5330113dbd164fb90d"}, {"url": "https://git.kernel.org/stable/c/1972f44c189c8aacde308fa9284e474c1a5cbd9f"}], "title": "btrfs: reject new transactions if the fs is fully read-only", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3483BE0E-C054-491B-B5C4-98ADBC2F04F4", "versionEndExcluding": "6.12.70", "versionStartIncluding": "5.11", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "7156C23F-009E-4D05-838C-A2DA417B5B8D", "versionEndExcluding": "6.18.10", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc1:*:*:*:*:*:*", "matchCriteriaId": "17B67AA7-40D6-4AFA-8459-F200F3D7CFD1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc2:*:*:*:*:*:*", "matchCriteriaId": "C47E4CC9-C826-4FA9-B014-7FE3D9B318B2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc3:*:*:*:*:*:*", "matchCriteriaId": "F71D92C0-C023-48BD-B3B6-70B638EEE298", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc4:*:*:*:*:*:*", "matchCriteriaId": "13580667-0A98-40CC-B29F-D12790B91BDB", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc5:*:*:*:*:*:*", "matchCriteriaId": "CAD1FED7-CF48-47BF-AC7D-7B6FA3C065FC", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.19:rc6:*:*:*:*:*:*", "matchCriteriaId": "3EF854A1-ABB1-4E93-BE9A-44569EC76C0D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: reject new transactions if the fs is fully read-only\n\n[BUG]\nThere is a bug report where a heavily fuzzed fs is mounted with all\nrescue mount options, which leads to the following warnings during\nunmount:\n\n BTRFS: Transaction aborted (error -22)\n Modules linked in:\n CPU: 0 UID: 0 PID: 9758 Comm: repro.out Not tainted\n 6.19.0-rc5-00002-gb71e635feefc #7 PREEMPT(full)\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n RIP: 0010:find_free_extent_update_loop fs/btrfs/extent-tree.c:4208 [inline]\n RIP: 0010:find_free_extent+0x52f0/0x5d20 fs/btrfs/extent-tree.c:4611\n Call Trace:\n <TASK>\n btrfs_reserve_extent+0x2cd/0x790 fs/btrfs/extent-tree.c:4705\n btrfs_alloc_tree_block+0x1e1/0x10e0 fs/btrfs/extent-tree.c:5157\n btrfs_force_cow_block+0x578/0x2410 fs/btrfs/ctree.c:517\n btrfs_cow_block+0x3c4/0xa80 fs/btrfs/ctree.c:708\n btrfs_search_slot+0xcad/0x2b50 fs/btrfs/ctree.c:2130\n btrfs_truncate_inode_items+0x45d/0x2350 fs/btrfs/inode-item.c:499\n btrfs_evict_inode+0x923/0xe70 fs/btrfs/inode.c:5628\n evict+0x5f4/0xae0 fs/inode.c:837\n __dentry_kill+0x209/0x660 fs/dcache.c:670\n finish_dput+0xc9/0x480 fs/dcache.c:879\n shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1661\n generic_shutdown_super+0x67/0x2c0 fs/super.c:621\n kill_anon_super+0x3b/0x70 fs/super.c:1289\n btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127\n deactivate_locked_super+0xbc/0x130 fs/super.c:474\n cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318\n task_work_run+0x1d4/0x260 kernel/task_work.c:233\n exit_task_work include/linux/task_work.h:40 [inline]\n do_exit+0x694/0x22f0 kernel/exit.c:971\n do_group_exit+0x21c/0x2d0 kernel/exit.c:1112\n __do_sys_exit_group kernel/exit.c:1123 [inline]\n __se_sys_exit_group kernel/exit.c:1121 [inline]\n __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121\n x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]\n do_syscall_64+0xe8/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n RIP: 0033:0x44f639\n Code: Unable to access opcode bytes at 0x44f60f.\n RSP: 002b:00007ffc15c4e088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7\n RAX: ffffffffffffffda RBX: 00000000004c32f0 RCX: 000000000044f639\n RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001\n RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004c32f0\n R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001\n </TASK>\n\nSince rescue mount options will mark the full fs read-only, there should\nbe no new transaction triggered.\n\nBut during unmount we will evict all inodes, which can trigger a new\ntransaction, and triggers warnings on a heavily corrupted fs.\n\n[CAUSE]\nBtrfs allows new transaction even on a read-only fs, this is to allow\nlog replay happen even on read-only mounts, just like what ext4/xfs do.\n\nHowever with rescue mount options, the fs is fully read-only and cannot\nbe remounted read-write, thus in that case we should also reject any new\ntransactions.\n\n[FIX]\nIf we find the fs has rescue mount options, we should treat the fs as\nerror, so that no new transaction can be started."}, {"lang": "es", "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nbtrfs: rechazar nuevas transacciones si el fs es completamente de solo lectura\n\n[ERROR]\nHay un informe de error donde un fs fuertemente fuzzed se monta con todas las opciones de montaje de rescate, lo que lleva a las siguientes advertencias durante el desmontaje:\n\n BTRFS: Transacci\u00f3n abortada (error -22)\n M\u00f3dulos enlazados:\n CPU: 0 UID: 0 PID: 9758 Comm: repro.out No contaminado\n 6.19.0-rc5-00002-gb71e635feefc #7 PREEMPT(full)\n Nombre del hardware: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014\n RIP: 0010:find_free_extent_update_loop fs/btrfs/extent-tree.c:4208 [en l\u00ednea]\n RIP: 0010:find_free_extent+0x52f0/0x5d20 fs/btrfs/extent-tree.c:4611\n Rastro de llamada:\n \n btrfs_reserve_extent+0x2cd/0x790 fs/btrfs/extent-tree.c:4705\n btrfs_alloc_tree_block+0x1e1/0x10e0 fs/btrfs/extent-tree.c:5157\n btrfs_force_cow_block+0x578/0x2410 fs/btrfs/ctree.c:517\n btrfs_cow_block+0x3c4/0xa80 fs/btrfs/ctree.c:708\n btrfs_search_slot+0xcad/0x2b50 fs/btrfs/ctree.c:2130\n btrfs_truncate_inode_items+0x45d/0x2350 fs/btrfs/inode-item.c:499\n btrfs_evict_inode+0x923/0xe70 fs/btrfs/inode.c:5628\n evict+0x5f4/0xae0 fs/inode.c:837\n __dentry_kill+0x209/0x660 fs/dcache.c:670\n finish_dput+0xc9/0x480 fs/dcache.c:879\n shrink_dcache_for_umount+0xa0/0x170 fs/dcache.c:1661\n generic_shutdown_super+0x67/0x2c0 fs/super.c:621\n kill_anon_super+0x3b/0x70 fs/super.c:1289\n btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127\n deactivate_locked_super+0xbc/0x130 fs/super.c:474\n cleanup_mnt+0x425/0x4c0 fs/namespace.c:1318\n task_work_run+0x1d4/0x260 kernel/task_work.c:233\n exit_task_work include/linux/task_work.h:40 [en l\u00ednea]\n do_exit+0x694/0x22f0 kernel/exit.c:971\n do_group_exit+0x21c/0x2d0 kernel/exit.c:1112\n __do_sys_exit_group kernel/exit.c:1123 [en l\u00ednea]\n __se_sys_exit_group kernel/exit.c:1121 [en l\u00ednea]\n __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1121\n x64_sys_call+0x2210/0x2210 arch/x86/include/generated/asm/syscalls_64.h:232\n do_syscall_x64 arch/x86/entry/syscall_64.c:63 [en l\u00ednea]\n do_syscall_64+0xe8/0xf80 arch/x86/entry/syscall_64.c:94\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n RIP: 0033:0x44f639\n C\u00f3digo: No se pueden acceder a los bytes del c\u00f3digo de operaci\u00f3n en 0x44f60f.\n RSP: 002b:00007ffc15c4e088 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7\n RAX: ffffffffffffffda RBX: 00000000004c32f0 RCX: 000000000044f639\n RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001\n RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000000\n R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004c32f0\n R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001\n \n\nDado que las opciones de montaje de rescate marcar\u00e1n el fs completo como de solo lectura, no deber\u00eda activarse ninguna nueva transacci\u00f3n.\n\nPero durante el desmontaje expulsaremos todos los inodos, lo que puede activar una nueva transacci\u00f3n, y activa advertencias en un fs fuertemente corrupto.\n\n[CAUSA]\nBtrfs permite nuevas transacciones incluso en un fs de solo lectura, esto es para permitir que la reproducci\u00f3n del registro ocurra incluso en montajes de solo lectura, al igual que lo hacen ext4/xfs.\n\nSin embargo, con las opciones de montaje de rescate, el fs es completamente de solo lectura y no puede ser remontado como lectura-escritura, por lo tanto, en ese caso tambi\u00e9n deber\u00edamos rechazar cualquier nueva transacci\u00f3n.\n\n[SOLUCI\u00d3N]\nSi encontramos que el fs tiene opciones de montaje de rescate, deber\u00edamos tratar el fs como un error, para que no se pueda iniciar ninguna nueva transacci\u00f3n."}], "id": "CVE-2026-23214", "lastModified": "2026-03-18T20:34:47.867", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2026-02-18T15:18:42.717", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1972f44c189c8aacde308fa9284e474c1a5cbd9f"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3228b2eceb6c3d7e237f8a5330113dbd164fb90d"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/a928eecf030a9a5dc5f5ca98332699f379b91963"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: btrfs: reject new transactions if the fs is fully read-only", "id": "2440631", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2440631"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "details": ["No description is available for this CVE."], "name": "CVE-2026-23214", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "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": "2026-02-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-23214\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-23214\nhttps://lore.kernel.org/linux-cve-announce/2026021800-CVE-2026-23214-c822@gregkh/T"], "threat_severity": "Moderate"}

{"created": "2026-02-19T10:19:40.083578+00:00", "updated": "2026-02-19T10:19:40.083774+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}