CVE-2022-50864
Estado: AplazadaSin puntuar—
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix shift-out-of-bounds due to too large exponent of block size
If field s_log_block_size of superblock data is corrupted and too large, init_nilfs() and load_nilfs() still can trigger a shift-out-of-bounds warning followed by a kernel panic (if panic_on_warn is set):
This fixes the issue by adding and using a new helper function for getting block size with sanity check.
Detalles técnicos trazas, registros y código del informe original
shift exponent 38973 is too large for 32-bit type 'int' Call Trace: <TASK> dump_stack_lvl+0xcd/0x134 ubsan_epilogue+0xb/0x50 __ubsan_handle_shift_out_of_bounds.cold.12+0x17b/0x1f5 init_nilfs.cold.11+0x18/0x1d [nilfs2] nilfs_mount+0x9b5/0x12b0 [nilfs2] ...
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- 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)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
- https://git.kernel.org/stable/c/8b6ef451b5701b37d9a5905534595776a662edfc
- https://git.kernel.org/stable/c/a16731fa1b96226c75bbf18e73513b14fc318360
- https://git.kernel.org/stable/c/ddb6615a168f97b91175e00eda4c644741cf531c
- https://git.kernel.org/stable/c/ebeccaaef67a4895d2496ab8d9c2fb8d89201211
- https://git.kernel.org/stable/c/ec93b5430ec0f60877a5388bb023d60624f9ab9f
JSON original (NVD)
Mostrar
{
"id": "CVE-2022-50864",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"affectedData": [
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
"lessThan": "ec93b5430ec0f60877a5388bb023d60624f9ab9f",
"versionType": "git"
},
{
"status": "affected",
"version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
"lessThan": "8b6ef451b5701b37d9a5905534595776a662edfc",
"versionType": "git"
},
{
"status": "affected",
"version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
"lessThan": "ddb6615a168f97b91175e00eda4c644741cf531c",
"versionType": "git"
},
{
"status": "affected",
"version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
"lessThan": "a16731fa1b96226c75bbf18e73513b14fc318360",
"versionType": "git"
},
{
"status": "affected",
"version": "8a9d2191e9f43bbcd256a9a6871bd73434c83f2f",
"lessThan": "ebeccaaef67a4895d2496ab8d9c2fb8d89201211",
"versionType": "git"
}
],
"programFiles": [
"fs/nilfs2/the_nilfs.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.30"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "2.6.30",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.163",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.86",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.0.16",
"versionType": "semver",
"lessThanOrEqual": "6.0.*"
},
{
"status": "unaffected",
"version": "6.1.2",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"fs/nilfs2/the_nilfs.c"
],
"defaultStatus": "affected"
}
]
}
],
"published": "2025-12-30T13:16:01.207",
"references": [
{
"url": "https://git.kernel.org/stable/c/8b6ef451b5701b37d9a5905534595776a662edfc",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/a16731fa1b96226c75bbf18e73513b14fc318360",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ddb6615a168f97b91175e00eda4c644741cf531c",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ebeccaaef67a4895d2496ab8d9c2fb8d89201211",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
},
{
"url": "https://git.kernel.org/stable/c/ec93b5430ec0f60877a5388bb023d60624f9ab9f",
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}
],
"vulnStatus": "Deferred",
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix shift-out-of-bounds due to too large exponent of block size\n\nIf field s_log_block_size of superblock data is corrupted and too large,\ninit_nilfs() and load_nilfs() still can trigger a shift-out-of-bounds\nwarning followed by a kernel panic (if panic_on_warn is set):\n\n shift exponent 38973 is too large for 32-bit type 'int'\n Call Trace:\n <TASK>\n dump_stack_lvl+0xcd/0x134\n ubsan_epilogue+0xb/0x50\n __ubsan_handle_shift_out_of_bounds.cold.12+0x17b/0x1f5\n init_nilfs.cold.11+0x18/0x1d [nilfs2]\n nilfs_mount+0x9b5/0x12b0 [nilfs2]\n ...\n\nThis fixes the issue by adding and using a new helper function for getting\nblock size with sanity check."
}
],
"lastModified": "2026-06-17T05:24:19.050",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}