CVE-2025-22127

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-22127", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-12-29T08:45:45.824Z", "datePublished": "2025-04-16T14:13:10.015Z", "dateUpdated": "2026-10-30T12:21:16.804Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-10-30T12:21:16.804Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix potential deadloop in prepare_compress_overwrite()\n\nJan Prusakowski reported a kernel hang issue as below:\n\nWhen running xfstests on linux-next kernel (6.14.0-rc3, 6.12) I\nencountered a problem in generic/475 test where fsstress process\ngets blocked in __f2fs_write_data_pages() and the test hangs.\nThe options I used are:\n\nMKFS_OPTIONS -- -O compression -O extra_attr -O project_quota -O quota /dev/vdc\nMOUNT_OPTIONS -- -o acl,user_xattr -o discard,compress_extension=* /dev/vdc /vdc\n\nINFO: task kworker/u8:0:11 blocked for more than 122 seconds.\n Not tainted 6.14.0-rc3-xfstests-lockdep #1\n\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:kworker/u8:0 state:D stack:0 pid:11 tgid:11 ppid:2 task_flags:0x4208160 flags:0x00004000\nWorkqueue: writeback wb_workfn (flush-253:0)\nCall Trace:\n <TASK>\n __schedule+0x309/0x8e0\n schedule+0x3a/0x100\n schedule_preempt_disabled+0x15/0x30\n __mutex_lock+0x59a/0xdb0\n __f2fs_write_data_pages+0x3ac/0x400\n do_writepages+0xe8/0x290\n __writeback_single_inode+0x5c/0x360\n writeback_sb_inodes+0x22f/0x570\n wb_writeback+0xb0/0x410\n wb_do_writeback+0x47/0x2f0\n wb_workfn+0x5a/0x1c0\n process_one_work+0x223/0x5b0\n worker_thread+0x1d5/0x3c0\n kthread+0xfd/0x230\n ret_from_fork+0x31/0x50\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nThe root cause is: once generic/475 starts toload error table to dm\ndevice, f2fs_prepare_compress_overwrite() will loop reading compressed\ncluster pages due to IO error, meanwhile it has held .writepages lock,\nit can block all other writeback tasks.\n\nLet's fix this issue w/ below changes:\n- add f2fs_handle_page_eio() in prepare_compress_overwrite() to\ndetect IO error.\n- detect cp_error earler in f2fs_read_multi_pages()."}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/compress.c", "fs/f2fs/data.c"], "versions": [{"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "lessThan": "353b262268c1646a0e7c96d4ed14c5d72a30ccb4", "status": "affected", "versionType": "git"}, {"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "lessThan": "4513843d58d8fa1daebd3817205a15309b146342", "status": "affected", "versionType": "git"}, {"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "lessThan": "7cd460bd9e7c6e6c30a33982603f65fb5deab1e4", "status": "affected", "versionType": "git"}, {"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "lessThan": "7215cf8ef54bdc9082dffac4662416d54961e258", "status": "affected", "versionType": "git"}, {"version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "lessThan": "3147ee567dd9004a49826ddeaf0a4b12865d4409", "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/f2fs/compress.c", "fs/f2fs/data.c"], "versions": [{"version": "5.6", "status": "affected"}, {"version": "0", "lessThan": "5.6", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.191", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.160", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.109", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.14.2", "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": "5.6", "versionEndExcluding": "6.1.191"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.6.160"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.12.109"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.14.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "5.6", "versionEndExcluding": "6.15"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/353b262268c1646a0e7c96d4ed14c5d72a30ccb4"}, {"url": "https://git.kernel.org/stable/c/4513843d58d8fa1daebd3817205a15309b146342"}, {"url": "https://git.kernel.org/stable/c/7cd460bd9e7c6e6c30a33982603f65fb5deab1e4"}, {"url": "https://git.kernel.org/stable/c/7215cf8ef54bdc9082dffac4662416d54961e258"}, {"url": "https://git.kernel.org/stable/c/3147ee567dd9004a49826ddeaf0a4b12865d4409"}], "title": "f2fs: fix potential deadloop in prepare_compress_overwrite()", "x_generator": {"engine": "bippy-1.2.0"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/f2fs/compress.c", "fs/f2fs/data.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "353b262268c1646a0e7c96d4ed14c5d72a30ccb4", "status": "affected", "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "versionType": "git"}, {"lessThan": "4513843d58d8fa1daebd3817205a15309b146342", "status": "affected", "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "versionType": "git"}, {"lessThan": "7cd460bd9e7c6e6c30a33982603f65fb5deab1e4", "status": "affected", "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "versionType": "git"}, {"lessThan": "7215cf8ef54bdc9082dffac4662416d54961e258", "status": "affected", "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "versionType": "git"}, {"lessThan": "3147ee567dd9004a49826ddeaf0a4b12865d4409", "status": "affected", "version": "4c8ff7095bef64fc47e996a938f7d57f9e077da3", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/f2fs/compress.c", "fs/f2fs/data.c"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "5.6"}, {"lessThan": "5.6", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.191", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.160", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.109", "versionType": "semver"}, {"lessThanOrEqual": "6.14.*", "status": "unaffected", "version": "6.14.2", "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": "D5E066C2-5A3F-4110-9102-BD6F43146E21", "versionEndExcluding": "6.14.2", "versionStartIncluding": "5.6", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix potential deadloop in prepare_compress_overwrite()\n\nJan Prusakowski reported a kernel hang issue as below:\n\nWhen running xfstests on linux-next kernel (6.14.0-rc3, 6.12) I\nencountered a problem in generic/475 test where fsstress process\ngets blocked in __f2fs_write_data_pages() and the test hangs.\nThe options I used are:\n\nMKFS_OPTIONS -- -O compression -O extra_attr -O project_quota -O quota /dev/vdc\nMOUNT_OPTIONS -- -o acl,user_xattr -o discard,compress_extension=* /dev/vdc /vdc\n\nINFO: task kworker/u8:0:11 blocked for more than 122 seconds.\n Not tainted 6.14.0-rc3-xfstests-lockdep #1\n\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:kworker/u8:0 state:D stack:0 pid:11 tgid:11 ppid:2 task_flags:0x4208160 flags:0x00004000\nWorkqueue: writeback wb_workfn (flush-253:0)\nCall Trace:\n <TASK>\n __schedule+0x309/0x8e0\n schedule+0x3a/0x100\n schedule_preempt_disabled+0x15/0x30\n __mutex_lock+0x59a/0xdb0\n __f2fs_write_data_pages+0x3ac/0x400\n do_writepages+0xe8/0x290\n __writeback_single_inode+0x5c/0x360\n writeback_sb_inodes+0x22f/0x570\n wb_writeback+0xb0/0x410\n wb_do_writeback+0x47/0x2f0\n wb_workfn+0x5a/0x1c0\n process_one_work+0x223/0x5b0\n worker_thread+0x1d5/0x3c0\n kthread+0xfd/0x230\n ret_from_fork+0x31/0x50\n ret_from_fork_asm+0x1a/0x30\n </TASK>\n\nThe root cause is: once generic/475 starts toload error table to dm\ndevice, f2fs_prepare_compress_overwrite() will loop reading compressed\ncluster pages due to IO error, meanwhile it has held .writepages lock,\nit can block all other writeback tasks.\n\nLet's fix this issue w/ below changes:\n- add f2fs_handle_page_eio() in prepare_compress_overwrite() to\ndetect IO error.\n- detect cp_error earler in f2fs_read_multi_pages()."}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: corrige un posible bucle muerto en prepare_compress_overwrite() Jan Prusakowski inform\u00f3 un problema de bloqueo del kernel como se muestra a continuaci\u00f3n: Al ejecutar xfstests en el kernel linux-next (6.14.0-rc3, 6.12), encontr\u00e9 un problema en la prueba generic/475 donde el proceso fsstress se bloquea en __f2fs_write_data_pages() y la prueba se bloquea. Las opciones que utilic\u00e9 son: MKFS_OPTIONS -- -O compression -O extra_attr -O project_quota -O quota /dev/vdc MOUNT_OPTIONS -- -o acl,user_xattr -o discard,compress_extension=* /dev/vdc /vdc INFO: la tarea kworker/u8:0:11 se bloque\u00f3 durante m\u00e1s de 122 segundos. No contaminado 6.14.0-rc3-xfstests-lockdep #1 \"echo 0 &gt; /proc/sys/kernel/hung_task_timeout_secs\" deshabilita este mensaje. tarea:kworker/u8:0 estado:D pila:0 pid:11 tgid:11 ppid:2 indicadores_de_tarea:0x4208160 indicadores:0x00004000 Cola de trabajo: reescritura wb_workfn (flush-253:0) Rastreo de llamadas: __schedule+0x309/0x8e0 schedule+0x3a/0x100 schedule_preempt_disabled+0x15/0x30 __mutex_lock+0x59a/0xdb0 __f2fs_write_data_pages+0x3ac/0x400 do_writepages+0xe8/0x290 __writeback_single_inode+0x5c/0x360 writeback_sb_inodes+0x22f/0x570 La causa ra\u00edz es: una vez que generic/475 comienza a cargar la tabla de errores en el dispositivo dm, f2fs_prepare_compress_overwrite() leer\u00e1 en bucle las p\u00e1ginas comprimidas del cl\u00faster debido a un error de E/S, mientras mantiene el bloqueo .writepages, puede bloquear todas las dem\u00e1s tareas de escritura diferida. Solucionemos este problema con los siguientes cambios: - agregue f2fs_handle_page_eio() en prepare_compress_overwrite() para detectar errores de E/S. - detecte cp_error antes en f2fs_read_multi_pages()."}], "id": "CVE-2025-22127", "lastModified": "2026-10-30T13:17:57.243", "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": "2025-04-16T15:16:06.813", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/3147ee567dd9004a49826ddeaf0a4b12865d4409"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/353b262268c1646a0e7c96d4ed14c5d72a30ccb4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/4513843d58d8fa1daebd3817205a15309b146342"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/7215cf8ef54bdc9082dffac4662416d54961e258"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "url": "https://git.kernel.org/stable/c/7cd460bd9e7c6e6c30a33982603f65fb5deab1e4"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: f2fs: fix potential deadloop in prepare_compress_overwrite()", "id": "2360296", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2360296"}, "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:\nf2fs: fix potential deadloop in prepare_compress_overwrite()\nJan Prusakowski reported a kernel hang issue as below:\nWhen running xfstests on linux-next kernel (6.14.0-rc3, 6.12) I\nencountered a problem in generic/475 test where fsstress process\ngets blocked in __f2fs_write_data_pages() and the test hangs.\nThe options I used are:\nMKFS_OPTIONS -- -O compression -O extra_attr -O project_quota -O quota /dev/vdc\nMOUNT_OPTIONS -- -o acl,user_xattr -o discard,compress_extension=* /dev/vdc /vdc\nINFO: task kworker/u8:0:11 blocked for more than 122 seconds.\nNot tainted 6.14.0-rc3-xfstests-lockdep #1\n\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:kworker/u8:0 state:D stack:0 pid:11 tgid:11 ppid:2 task_flags:0x4208160 flags:0x00004000\nWorkqueue: writeback wb_workfn (flush-253:0)\nCall Trace:\n<TASK>\n__schedule+0x309/0x8e0\nschedule+0x3a/0x100\nschedule_preempt_disabled+0x15/0x30\n__mutex_lock+0x59a/0xdb0\n__f2fs_write_data_pages+0x3ac/0x400\ndo_writepages+0xe8/0x290\n__writeback_single_inode+0x5c/0x360\nwriteback_sb_inodes+0x22f/0x570\nwb_writeback+0xb0/0x410\nwb_do_writeback+0x47/0x2f0\nwb_workfn+0x5a/0x1c0\nprocess_one_work+0x223/0x5b0\nworker_thread+0x1d5/0x3c0\nkthread+0xfd/0x230\nret_from_fork+0x31/0x50\nret_from_fork_asm+0x1a/0x30\n</TASK>\nThe root cause is: once generic/475 starts toload error table to dm\ndevice, f2fs_prepare_compress_overwrite() will loop reading compressed\ncluster pages due to IO error, meanwhile it has held .writepages lock,\nit can block all other writeback tasks.\nLet's fix this issue w/ below changes:\n- add f2fs_handle_page_eio() in prepare_compress_overwrite() to\ndetect IO error.\n- detect cp_error earler in f2fs_read_multi_pages()."], "name": "CVE-2025-22127", "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": "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": "2025-04-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-22127\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-22127\nhttps://lore.kernel.org/linux-cve-announce/2025041630-CVE-2025-22127-81a6@gregkh/T"], "threat_severity": "Low"}

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