CVE-2025-37904

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-37904", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2025-04-16T04:51:23.965Z", "datePublished": "2025-05-20T15:21:38.075Z", "dateUpdated": "2026-05-11T21:17:21.520Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-11T21:17:21.520Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix the inode leak in btrfs_iget()\n\n[BUG]\nThere is a bug report that a syzbot reproducer can lead to the following\nbusy inode at unmount time:\n\n BTRFS info (device loop1): last unmount of filesystem 1680000e-3c1e-4c46-84b6-56bd3909af50\n VFS: Busy inodes after unmount of loop1 (btrfs)\n ------------[ cut here ]------------\n kernel BUG at fs/super.c:650!\n Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\n CPU: 0 UID: 0 PID: 48168 Comm: syz-executor Not tainted 6.15.0-rc2-00471-g119009db2674 #2 PREEMPT(full)\n Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n RIP: 0010:generic_shutdown_super+0x2e9/0x390 fs/super.c:650\n Call Trace:\n <TASK>\n kill_anon_super+0x3a/0x60 fs/super.c:1237\n btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2099\n deactivate_locked_super+0xbe/0x1a0 fs/super.c:473\n deactivate_super fs/super.c:506 [inline]\n deactivate_super+0xe2/0x100 fs/super.c:502\n cleanup_mnt+0x21f/0x440 fs/namespace.c:1435\n task_work_run+0x14d/0x240 kernel/task_work.c:227\n resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:114 [inline]\n exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]\n __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]\n syscall_exit_to_user_mode+0x269/0x290 kernel/entry/common.c:218\n do_syscall_64+0xd4/0x250 arch/x86/entry/syscall_64.c:100\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n </TASK>\n\n[CAUSE]\nWhen btrfs_alloc_path() failed, btrfs_iget() directly returned without\nreleasing the inode already allocated by btrfs_iget_locked().\n\nThis results the above busy inode and trigger the kernel BUG.\n\n[FIX]\nFix it by calling iget_failed() if btrfs_alloc_path() failed.\n\nIf we hit error inside btrfs_read_locked_inode(), it will properly call\niget_failed(), so nothing to worry about.\n\nAlthough the iget_failed() cleanup inside btrfs_read_locked_inode() is a\nbreak of the normal error handling scheme, let's fix the obvious bug\nand backport first, then rework the error handling later."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/btrfs/inode.c"], "versions": [{"version": "7c855e16ab72596d771355050ffe026e6b99f91c", "lessThan": "30a339bece3a44ab0a821477139e84fb86af9761", "status": "affected", "versionType": "git"}, {"version": "7c855e16ab72596d771355050ffe026e6b99f91c", "lessThan": "48c1d1bb525b1c44b8bdc8e7ec5629cb6c2b9fc4", "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/inode.c"], "versions": [{"version": "6.13", "status": "affected"}, {"version": "0", "lessThan": "6.13", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.6", "lessThanOrEqual": "6.14.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.15", "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": "6.13", "versionEndExcluding": "6.14.6"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "6.13", "versionEndExcluding": "6.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/30a339bece3a44ab0a821477139e84fb86af9761"}, {"url": "https://git.kernel.org/stable/c/48c1d1bb525b1c44b8bdc8e7ec5629cb6c2b9fc4"}], "title": "btrfs: fix the inode leak in btrfs_iget()", "x_generator": {"engine": "bippy-1.2.0"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/btrfs/inode.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "30a339bece3a44ab0a821477139e84fb86af9761", "status": "affected", "version": "7c855e16ab72596d771355050ffe026e6b99f91c", "versionType": "git"}, {"lessThan": "48c1d1bb525b1c44b8bdc8e7ec5629cb6c2b9fc4", "status": "affected", "version": "7c855e16ab72596d771355050ffe026e6b99f91c", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/btrfs/inode.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "6.13"}, {"lessThan": "6.13", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.14.*", "status": "unaffected", "version": "6.14.6", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.15", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "19E5095E-5950-43EA-8E78-FC860855293F", "versionEndExcluding": "6.14.6", "versionStartIncluding": "6.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc1:*:*:*:*:*:*", "matchCriteriaId": "8D465631-2980-487A-8E65-40AE2B9F8ED1", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc2:*:*:*:*:*:*", "matchCriteriaId": "4C9D071F-B28E-46EC-AC61-22B913390211", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc3:*:*:*:*:*:*", "matchCriteriaId": "13FC0DDE-E513-465E-9E81-515702D49B74", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.15:rc4:*:*:*:*:*:*", "matchCriteriaId": "8C7B5B0E-4EEB-48F5-B4CF-0935A7633845", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix the inode leak in btrfs_iget()\n\n[BUG]\nThere is a bug report that a syzbot reproducer can lead to the following\nbusy inode at unmount time:\n\n BTRFS info (device loop1): last unmount of filesystem 1680000e-3c1e-4c46-84b6-56bd3909af50\n VFS: Busy inodes after unmount of loop1 (btrfs)\n ------------[ cut here ]------------\n kernel BUG at fs/super.c:650!\n Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\n CPU: 0 UID: 0 PID: 48168 Comm: syz-executor Not tainted 6.15.0-rc2-00471-g119009db2674 #2 PREEMPT(full)\n Hardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\n RIP: 0010:generic_shutdown_super+0x2e9/0x390 fs/super.c:650\n Call Trace:\n <TASK>\n kill_anon_super+0x3a/0x60 fs/super.c:1237\n btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2099\n deactivate_locked_super+0xbe/0x1a0 fs/super.c:473\n deactivate_super fs/super.c:506 [inline]\n deactivate_super+0xe2/0x100 fs/super.c:502\n cleanup_mnt+0x21f/0x440 fs/namespace.c:1435\n task_work_run+0x14d/0x240 kernel/task_work.c:227\n resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]\n exit_to_user_mode_loop kernel/entry/common.c:114 [inline]\n exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]\n __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]\n syscall_exit_to_user_mode+0x269/0x290 kernel/entry/common.c:218\n do_syscall_64+0xd4/0x250 arch/x86/entry/syscall_64.c:100\n entry_SYSCALL_64_after_hwframe+0x77/0x7f\n </TASK>\n\n[CAUSE]\nWhen btrfs_alloc_path() failed, btrfs_iget() directly returned without\nreleasing the inode already allocated by btrfs_iget_locked().\n\nThis results the above busy inode and trigger the kernel BUG.\n\n[FIX]\nFix it by calling iget_failed() if btrfs_alloc_path() failed.\n\nIf we hit error inside btrfs_read_locked_inode(), it will properly call\niget_failed(), so nothing to worry about.\n\nAlthough the iget_failed() cleanup inside btrfs_read_locked_inode() is a\nbreak of the normal error handling scheme, let's fix the obvious bug\nand backport first, then rework the error handling later."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: btrfs: arregla la p\u00e9rdida de inodo en btrfs_iget() [ERROR] Hay un informe de error que indica que un reproductor syzbot puede provocar el siguiente inodo ocupado en el momento del desmontaje: Informaci\u00f3n BTRFS (dispositivo loop1): \u00faltimo desmontaje del sistema de archivos 1680000e-3c1e-4c46-84b6-56bd3909af50 VFS: Inodos ocupados despu\u00e9s del desmontaje de loop1 (btrfs) ------------[ cortar aqu\u00ed ]------------ \u00a1ERROR del kernel en fs/super.c:650! Oops: c\u00f3digo de operaci\u00f3n no v\u00e1lido: 0000 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 48168 Comm: syz-executor No contaminado 6.15.0-rc2-00471-g119009db2674 #2 PREEMPT(full) Nombre del hardware: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 01/04/2014 RIP: 0010:generic_shutdown_super+0x2e9/0x390 fs/super.c:650 Rastreo de llamadas: kill_anon_super+0x3a/0x60 fs/super.c:1237 btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2099 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473 deactivate_super fs/super.c:506 [inline] deactivate_super+0xe2/0x100 fs/super.c:502 cleanup_mnt+0x21f/0x440 fs/namespace.c:1435 task_work_run+0x14d/0x240 kernel/task_work.c:227 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x269/0x290 kernel/entry/common.c:218 do_syscall_64+0xd4/0x250 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f [CAUSA] Cuando btrfs_alloc_path() fallaba, btrfs_iget() regresaba directamente sin liberar el inodo ya asignado por btrfs_iget_locked(). Esto genera el inodo ocupado mencionado anteriormente y activa el error del kernel. [SOLUCI\u00d3N] Corr\u00edjalo llamando a iget_failed() si btrfs_alloc_path() fallaba. Si encontramos un error en btrfs_read_locked_inode(), se llamar\u00e1 correctamente a iget_failed(), as\u00ed que no hay de qu\u00e9 preocuparse. Aunque la limpieza de iget_failed() dentro de btrfs_read_locked_inode() supone una ruptura del esquema normal de gesti\u00f3n de errores, primero corregiremos el error obvio y lo adaptaremos a la versi\u00f3n anterior, y luego reescribiremos la gesti\u00f3n de errores."}], "id": "CVE-2025-37904", "lastModified": "2026-06-17T09:15:40.140", "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": "2025-05-20T16:15:26.820", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/30a339bece3a44ab0a821477139e84fb86af9761"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/48c1d1bb525b1c44b8bdc8e7ec5629cb6c2b9fc4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-401"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: btrfs: fix the inode leak in btrfs_iget()", "id": "2367534", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2367534"}, "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": ["In the Linux kernel, the following vulnerability has been resolved:\nbtrfs: fix the inode leak in btrfs_iget()\n[BUG]\nThere is a bug report that a syzbot reproducer can lead to the following\nbusy inode at unmount time:\nBTRFS info (device loop1): last unmount of filesystem 1680000e-3c1e-4c46-84b6-56bd3909af50\nVFS: Busy inodes after unmount of loop1 (btrfs)\n------------[ cut here ]------------\nkernel BUG at fs/super.c:650!\nOops: invalid opcode: 0000 [#1] SMP KASAN NOPTI\nCPU: 0 UID: 0 PID: 48168 Comm: syz-executor Not tainted 6.15.0-rc2-00471-g119009db2674 #2 PREEMPT(full)\nHardware name: QEMU Ubuntu 24.04 PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014\nRIP: 0010:generic_shutdown_super+0x2e9/0x390 fs/super.c:650\nCall Trace:\n<TASK>\nkill_anon_super+0x3a/0x60 fs/super.c:1237\nbtrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2099\ndeactivate_locked_super+0xbe/0x1a0 fs/super.c:473\ndeactivate_super fs/super.c:506 [inline]\ndeactivate_super+0xe2/0x100 fs/super.c:502\ncleanup_mnt+0x21f/0x440 fs/namespace.c:1435\ntask_work_run+0x14d/0x240 kernel/task_work.c:227\nresume_user_mode_work include/linux/resume_user_mode.h:50 [inline]\nexit_to_user_mode_loop kernel/entry/common.c:114 [inline]\nexit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]\n__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]\nsyscall_exit_to_user_mode+0x269/0x290 kernel/entry/common.c:218\ndo_syscall_64+0xd4/0x250 arch/x86/entry/syscall_64.c:100\nentry_SYSCALL_64_after_hwframe+0x77/0x7f\n</TASK>\n[CAUSE]\nWhen btrfs_alloc_path() failed, btrfs_iget() directly returned without\nreleasing the inode already allocated by btrfs_iget_locked().\nThis results the above busy inode and trigger the kernel BUG.\n[FIX]\nFix it by calling iget_failed() if btrfs_alloc_path() failed.\nIf we hit error inside btrfs_read_locked_inode(), it will properly call\niget_failed(), so nothing to worry about.\nAlthough the iget_failed() cleanup inside btrfs_read_locked_inode() is a\nbreak of the normal error handling scheme, let's fix the obvious bug\nand backport first, then rework the error handling later."], "name": "CVE-2025-37904", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "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": "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": "2025-05-20T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-37904\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-37904\nhttps://lore.kernel.org/linux-cve-announce/2025052056-CVE-2025-37904-f401@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-06-27T09:26:51.766760+00:00", "updated": "2025-06-27T09:26:51.766812+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}