CVE-2024-53220

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2024-53220", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "state": "PUBLISHED", "assignerShortName": "Linux", "dateReserved": "2024-11-19T17:17:25.024Z", "datePublished": "2024-12-27T13:50:05.416Z", "dateUpdated": "2026-08-05T11:44:43.413Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-08-05T11:44:43.413Z"}, "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to account dirty data in __get_secs_required()\n\nIt will trigger system panic w/ testcase in [1]:\n\n------------[ cut here ]------------\nkernel BUG at fs/f2fs/segment.c:2752!\nRIP: 0010:new_curseg+0xc81/0x2110\nCall Trace:\n f2fs_allocate_data_block+0x1c91/0x4540\n do_write_page+0x163/0xdf0\n f2fs_outplace_write_data+0x1aa/0x340\n f2fs_do_write_data_page+0x797/0x2280\n f2fs_write_single_data_page+0x16cd/0x2190\n f2fs_write_cache_pages+0x994/0x1c80\n f2fs_write_data_pages+0x9cc/0xea0\n do_writepages+0x194/0x7a0\n filemap_fdatawrite_wbc+0x12b/0x1a0\n __filemap_fdatawrite_range+0xbb/0xf0\n file_write_and_wait_range+0xa1/0x110\n f2fs_do_sync_file+0x26f/0x1c50\n f2fs_sync_file+0x12b/0x1d0\n vfs_fsync_range+0xfa/0x230\n do_fsync+0x3d/0x80\n __x64_sys_fsync+0x37/0x50\n x64_sys_call+0x1e88/0x20d0\n do_syscall_64+0x4b/0x110\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThe root cause is if checkpoint_disabling and lfs_mode are both on,\nit will trigger OPU for all overwritten data, it may cost more free\nsegment than expected, so f2fs must account those data correctly to\ncalculate cosumed free segments later, and return ENOSPC earlier to\navoid run out of free segment during block allocation.\n\n[1] https://lore.kernel.org/fstests/20241015025106.3203676-1-chao@kernel.org/"}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH"}, "scenarios": [{"lang": "en", "value": "AV:L - The vulnerability is reached through ordinary local filesystem syscalls (write(2)/fsync(2)/create/setattr on a mounted f2fs volume), with the reported trace running from __x64_sys_fsync down to f2fs_allocate_data_block. No network or remote peer data is involved.\nAC:L - Once the volume is mounted in the affected configuration (mode=lfs \u2014 mandatory for zoned block devices \u2014 plus checkpoint=disable, the standard Android userdata-checkpointing mode), the attacker deterministically triggers it by overwriting data and fsync'ing until free sections are exhausted; no race and no attacker-uncontrollable state is required.\nPR:L - Any unprivileged local user with write access to the f2fs mount (e.g. any Android app on /data, or any user on a shared f2fs volume) can drive the dirty-data accounting error; no capability, CAP_SYS_ADMIN, or mount privilege is needed since the mount is performed by the system.\nUI:N - Exploitation needs only the attacker's own file writes and fsync on an already-mounted filesystem; no action by another user or administrator is required at exploit time.\nS:U - The miscounting, the BUG_ON, and the resulting out-of-bounds accesses are all confined to the kernel's own security authority; no VM, IOMMU, or sandbox boundary is crossed.\nC:H - On the affected trees the allocation failure is not propagated, so execution continues with an out-of-range secno/segno, performing out-of-bounds reads on free_segmap and on sit_i->sentries[] past their allocations, giving an attacker-influenced heap read primitive that can disclose adjacent kernel memory.\nI:H - The same out-of-range segno drives out-of-bounds writes \u2014 set_bit()/test_and_set_bit() past free_segmap/free_secmap and sit_i->sentries[segno].type = type past the sentries array \u2014 plus block allocation at invalid addresses and on-disk metadata inconsistency (SBI_NEED_FSCK), i.e. attacker-reachable kernel heap corruption.\nA:H - The reported symptom is a hard kernel panic (BUG at fs/f2fs/segment.c:2752 via f2fs_bug_on with CONFIG_F2FS_CHECK_FS); without that config it warns and calls f2fs_stop_checkpoint(STOP_CP_REASON_NO_SEGMENT), shutting the filesystem down and failing all subsequent I/O."}]}], "affected": [{"product": "Linux", "vendor": "Linux", "defaultStatus": "unaffected", "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "programFiles": ["fs/f2fs/segment.h"], "versions": [{"version": "4354994f097d068a894aa1a0860da54571df3582", "lessThan": "6e58b2987960efcd917bc42da781cee256213618", "status": "affected", "versionType": "git"}, {"version": "4354994f097d068a894aa1a0860da54571df3582", "lessThan": "f1b8bfe8d2f2fdf905d37c174d5bc1cd2b6910c5", "status": "affected", "versionType": "git"}, {"version": "4354994f097d068a894aa1a0860da54571df3582", "lessThan": "9313b85ddc120e2d2f0efaf86d0204d4c98d60b1", "status": "affected", "versionType": "git"}, {"version": "4354994f097d068a894aa1a0860da54571df3582", "lessThan": "e812871c068cc0f91ff9f5cee87d00df1c44aae4", "status": "affected", "versionType": "git"}, {"version": "4354994f097d068a894aa1a0860da54571df3582", "lessThan": "1acd73edbbfef2c3c5b43cba4006a7797eca7050", "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/segment.h"], "versions": [{"version": "4.20", "status": "affected"}, {"version": "0", "lessThan": "4.20", "status": "unaffected", "versionType": "semver"}, {"version": "6.1.120", "lessThanOrEqual": "6.1.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.6.64", "lessThanOrEqual": "6.6.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.11.11", "lessThanOrEqual": "6.11.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.12.2", "lessThanOrEqual": "6.12.*", "status": "unaffected", "versionType": "semver"}, {"version": "6.13", "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": "4.20", "versionEndExcluding": "6.1.120"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.6.64"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.11.11"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.12.2"}, {"vulnerable": true, "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "versionStartIncluding": "4.20", "versionEndExcluding": "6.13"}]}]}], "references": [{"url": "https://git.kernel.org/stable/c/6e58b2987960efcd917bc42da781cee256213618"}, {"url": "https://git.kernel.org/stable/c/f1b8bfe8d2f2fdf905d37c174d5bc1cd2b6910c5"}, {"url": "https://git.kernel.org/stable/c/9313b85ddc120e2d2f0efaf86d0204d4c98d60b1"}, {"url": "https://git.kernel.org/stable/c/e812871c068cc0f91ff9f5cee87d00df1c44aae4"}, {"url": "https://git.kernel.org/stable/c/1acd73edbbfef2c3c5b43cba4006a7797eca7050"}], "title": "f2fs: fix to account dirty data in __get_secs_required()", "x_generator": {"engine": "bippy-1.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T20:47:48.528Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Linux", "programFiles": ["fs/f2fs/segment.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"lessThan": "6e58b2987960efcd917bc42da781cee256213618", "status": "affected", "version": "4354994f097d068a894aa1a0860da54571df3582", "versionType": "git"}, {"lessThan": "f1b8bfe8d2f2fdf905d37c174d5bc1cd2b6910c5", "status": "affected", "version": "4354994f097d068a894aa1a0860da54571df3582", "versionType": "git"}, {"lessThan": "9313b85ddc120e2d2f0efaf86d0204d4c98d60b1", "status": "affected", "version": "4354994f097d068a894aa1a0860da54571df3582", "versionType": "git"}, {"lessThan": "e812871c068cc0f91ff9f5cee87d00df1c44aae4", "status": "affected", "version": "4354994f097d068a894aa1a0860da54571df3582", "versionType": "git"}, {"lessThan": "1acd73edbbfef2c3c5b43cba4006a7797eca7050", "status": "affected", "version": "4354994f097d068a894aa1a0860da54571df3582", "versionType": "git"}]}, {"defaultStatus": "affected", "product": "Linux", "programFiles": ["fs/f2fs/segment.h"], "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", "vendor": "Linux", "versions": [{"status": "affected", "version": "4.20"}, {"lessThan": "4.20", "status": "unaffected", "version": "0", "versionType": "semver"}, {"lessThanOrEqual": "6.1.*", "status": "unaffected", "version": "6.1.120", "versionType": "semver"}, {"lessThanOrEqual": "6.6.*", "status": "unaffected", "version": "6.6.64", "versionType": "semver"}, {"lessThanOrEqual": "6.11.*", "status": "unaffected", "version": "6.11.11", "versionType": "semver"}, {"lessThanOrEqual": "6.12.*", "status": "unaffected", "version": "6.12.2", "versionType": "semver"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "6.13", "versionType": "original_commit_for_fix"}]}], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "3003D323-CBD0-4593-9A56-0256311FBD94", "versionEndExcluding": "6.1.120", "versionStartIncluding": "4.20", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "CA16DEE3-ABEC-4449-9F4A-7A3DC4FC36C7", "versionEndExcluding": "6.6.64", "versionStartIncluding": "6.2", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "21434379-192D-472F-9B54-D45E3650E893", "versionEndExcluding": "6.11.11", "versionStartIncluding": "6.7", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "D8882B1B-2ABC-4838-AC1D-DBDBB5764776", "versionEndExcluding": "6.12.2", "versionStartIncluding": "6.12", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nf2fs: fix to account dirty data in __get_secs_required()\n\nIt will trigger system panic w/ testcase in [1]:\n\n------------[ cut here ]------------\nkernel BUG at fs/f2fs/segment.c:2752!\nRIP: 0010:new_curseg+0xc81/0x2110\nCall Trace:\n f2fs_allocate_data_block+0x1c91/0x4540\n do_write_page+0x163/0xdf0\n f2fs_outplace_write_data+0x1aa/0x340\n f2fs_do_write_data_page+0x797/0x2280\n f2fs_write_single_data_page+0x16cd/0x2190\n f2fs_write_cache_pages+0x994/0x1c80\n f2fs_write_data_pages+0x9cc/0xea0\n do_writepages+0x194/0x7a0\n filemap_fdatawrite_wbc+0x12b/0x1a0\n __filemap_fdatawrite_range+0xbb/0xf0\n file_write_and_wait_range+0xa1/0x110\n f2fs_do_sync_file+0x26f/0x1c50\n f2fs_sync_file+0x12b/0x1d0\n vfs_fsync_range+0xfa/0x230\n do_fsync+0x3d/0x80\n __x64_sys_fsync+0x37/0x50\n x64_sys_call+0x1e88/0x20d0\n do_syscall_64+0x4b/0x110\n entry_SYSCALL_64_after_hwframe+0x76/0x7e\n\nThe root cause is if checkpoint_disabling and lfs_mode are both on,\nit will trigger OPU for all overwritten data, it may cost more free\nsegment than expected, so f2fs must account those data correctly to\ncalculate cosumed free segments later, and return ENOSPC earlier to\navoid run out of free segment during block allocation.\n\n[1] https://lore.kernel.org/fstests/20241015025106.3203676-1-chao@kernel.org/"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: correcci\u00f3n para contabilizar datos sucios en __get_secs_required() Activar\u00e1 el p\u00e1nico del sistema con el caso de prueba en [1]: ------------[ corte aqu\u00ed ]------------ \u00a1ERROR del kernel en fs/f2fs/segment.c:2752! RIP: 0010:new_curseg+0xc81/0x2110 Seguimiento de llamadas: f2fs_allocate_data_block+0x1c91/0x4540 do_write_page+0x163/0xdf0 f2fs_outplace_write_data+0x1aa/0x340 f2fs_do_write_data_page+0x797/0x2280 f2fs_write_single_data_page+0x16cd/0x2190 f2fs_write_cache_pages+0x994/0x1c80 f2fs_write_data_pages+0x9cc/0xea0 do_writepages+0x194/0x7a0 filemap_fdatawrite_wbc+0x12b/0x1a0 __filemap_fdatawrite_range+0xbb/0xf0 file_write_and_wait_range+0xa1/0x110 f2fs_do_sync_file+0x26f/0x1c50 f2fs_sync_file+0x12b/0x1d0 vfs_fsync_range+0xfa/0x230 do_fsync+0x3d/0x80 __x64_sys_fsync+0x37/0x50 x64_sys_call+0x1e88/0x20d0 do_syscall_64+0x4b/0x110 entry_SYSCALL_64_after_hwframe+0x76/0x7e La causa ra\u00edz es que si checkpoint_disabling y lfs_mode est\u00e1n activados, se activar\u00e1 OPU para todos los datos sobrescritos, lo que puede costar m\u00e1s segmento libre de lo esperado, por lo que f2fs debe tener en cuenta esos datos correctamente para calcular los segmentos libres consumidos m\u00e1s tarde y devolver ENOSPC antes para evitar quedarse sin segmentos libres durante la asignaci\u00f3n de bloques. [1] https://lore.kernel.org/fstests/20241015025106.3203676-1-chao@kernel.org/"}], "id": "CVE-2024-53220", "lastModified": "2026-08-04T11:22:06.603", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "type": "Secondary"}, {"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": "2024-12-27T14:15:30.077", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/1acd73edbbfef2c3c5b43cba4006a7797eca7050"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/6e58b2987960efcd917bc42da781cee256213618"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/9313b85ddc120e2d2f0efaf86d0204d4c98d60b1"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/e812871c068cc0f91ff9f5cee87d00df1c44aae4"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Patch"], "url": "https://git.kernel.org/stable/c/f1b8bfe8d2f2fdf905d37c174d5bc1cd2b6910c5"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: f2fs: fix to account dirty data in __get_secs_required()", "id": "2334413", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2334413"}, "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 to account dirty data in __get_secs_required()\nIt will trigger system panic w/ testcase in [1]:\n------------[ cut here ]------------\nkernel BUG at fs/f2fs/segment.c:2752!\nRIP: 0010:new_curseg+0xc81/0x2110\nCall Trace:\nf2fs_allocate_data_block+0x1c91/0x4540\ndo_write_page+0x163/0xdf0\nf2fs_outplace_write_data+0x1aa/0x340\nf2fs_do_write_data_page+0x797/0x2280\nf2fs_write_single_data_page+0x16cd/0x2190\nf2fs_write_cache_pages+0x994/0x1c80\nf2fs_write_data_pages+0x9cc/0xea0\ndo_writepages+0x194/0x7a0\nfilemap_fdatawrite_wbc+0x12b/0x1a0\n__filemap_fdatawrite_range+0xbb/0xf0\nfile_write_and_wait_range+0xa1/0x110\nf2fs_do_sync_file+0x26f/0x1c50\nf2fs_sync_file+0x12b/0x1d0\nvfs_fsync_range+0xfa/0x230\ndo_fsync+0x3d/0x80\n__x64_sys_fsync+0x37/0x50\nx64_sys_call+0x1e88/0x20d0\ndo_syscall_64+0x4b/0x110\nentry_SYSCALL_64_after_hwframe+0x76/0x7e\nThe root cause is if checkpoint_disabling and lfs_mode are both on,\nit will trigger OPU for all overwritten data, it may cost more free\nsegment than expected, so f2fs must account those data correctly to\ncalculate cosumed free segments later, and return ENOSPC earlier to\navoid run out of free segment during block allocation.\n[1] https://lore.kernel.org/fstests/20241015025106.3203676-1-chao@kernel.org/"], "name": "CVE-2024-53220", "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": "2024-12-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2024-53220\nhttps://nvd.nist.gov/vuln/detail/CVE-2024-53220\nhttps://lore.kernel.org/linux-cve-announce/2024122733-CVE-2024-53220-3664@gregkh/T"], "threat_severity": "Low"}

{"created": "2025-07-12T22:31:59.275329+00:00", "updated": "2025-07-12T22:31:59.275389+00:00", "vendors": ["linux", "linux$PRODUCT$linux_kernel"]}