CVE-2024-53220
Estado: ModificadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
f2fs: fix to account dirty data in __get_secs_required()
It will trigger system panic w/ testcase in [1]:
The root cause is if checkpoint_disabling and lfs_mode are both on, it will trigger OPU for all overwritten data, it may cost more free segment than expected, so f2fs must account those data correctly to calculate cosumed free segments later, and return ENOSPC earlier to avoid run out of free segment during block allocation.
[1] https://lore.kernel.org/fstests/20241015025106.3203676-1-chao@kernel.org/
Detalles técnicos trazas, registros y código del informe original
------------[ cut here ]------------ kernel BUG at fs/f2fs/segment.c:2752! RIP: 0010:new_curseg+0xc81/0x2110 Call Trace: 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
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Puntuación base: 5.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.23%
- Percentil entre todas las CVEs puntuadas: 13
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/1acd73edbbfef2c3c5b43cba4006a7797eca7050
- https://git.kernel.org/stable/c/6e58b2987960efcd917bc42da781cee256213618
- https://git.kernel.org/stable/c/9313b85ddc120e2d2f0efaf86d0204d4c98d60b1
- https://git.kernel.org/stable/c/e812871c068cc0f91ff9f5cee87d00df1c44aae4
- https://git.kernel.org/stable/c/f1b8bfe8d2f2fdf905d37c174d5bc1cd2b6910c5
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.html
JSON original (NVD)
Mostrar
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"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/"
},
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: f2fs: corrección para contabilizar datos sucios en __get_secs_required() Activará el pánico del sistema con el caso de prueba en [1]: ------------[ corte aquí ]------------ ¡ERROR 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 raíz es que si checkpoint_disabling y lfs_mode están activados, se activará OPU para todos los datos sobrescritos, lo que puede costar más segmento libre de lo esperado, por lo que f2fs debe tener en cuenta esos datos correctamente para calcular los segmentos libres consumidos más tarde y devolver ENOSPC antes para evitar quedarse sin segmentos libres durante la asignación de bloques. [1] https://lore.kernel.org/fstests/20241015025106.3203676-1-chao@kernel.org/"
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],
"lastModified": "2026-08-04T11:22:06.603",
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