fkie_cve-2024-39469
Vulnerability from fkie_nvd
Published
2024-06-25 15:15
Modified
2024-11-21 09:27
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors
The error handling in nilfs_empty_dir() when a directory folio/page read
fails is incorrect, as in the old ext2 implementation, and if the
folio/page cannot be read or nilfs_check_folio() fails, it will falsely
determine the directory as empty and corrupt the file system.
In addition, since nilfs_empty_dir() does not immediately return on a
failed folio/page read, but continues to loop, this can cause a long loop
with I/O if i_size of the directory's inode is also corrupted, causing the
log writer thread to wait and hang, as reported by syzbot.
Fix these issues by making nilfs_empty_dir() immediately return a false
value (0) if it fails to get a directory folio/page.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors\n\nThe error handling in nilfs_empty_dir() when a directory folio/page read\nfails is incorrect, as in the old ext2 implementation, and if the\nfolio/page cannot be read or nilfs_check_folio() fails, it will falsely\ndetermine the directory as empty and corrupt the file system.\n\nIn addition, since nilfs_empty_dir() does not immediately return on a\nfailed folio/page read, but continues to loop, this can cause a long loop\nwith I/O if i_size of the directory\u0027s inode is also corrupted, causing the\nlog writer thread to wait and hang, as reported by syzbot.\n\nFix these issues by making nilfs_empty_dir() immediately return a false\nvalue (0) if it fails to get a directory folio/page."
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: nilfs2: corrige el error de c\u00e1lculo de nilfs_empty_dir() y el bucle largo en errores de E/S. El manejo de errores en nilfs_empty_dir() cuando falla la lectura de una p\u00e1gina/folio de directorio es incorrecto, como en el antiguo ext2 implementaci\u00f3n, y si la publicaci\u00f3n/p\u00e1gina no se puede leer o nilfs_check_folio() falla, determinar\u00e1 err\u00f3neamente que el directorio est\u00e1 vac\u00edo y da\u00f1ar\u00e1 el sistema de archivos. Adem\u00e1s, dado que nilfs_empty_dir() no regresa inmediatamente tras una lectura fallida de un folio/p\u00e1gina, sino que contin\u00faa en bucle, esto puede provocar un bucle largo con E/S si i_size del inodo del directorio tambi\u00e9n est\u00e1 da\u00f1ado, lo que provoca que el subproceso del escritor de registros se bloquee. espera y cuelga, seg\u00fan lo informado por syzbot. Solucione estos problemas haciendo que nilfs_empty_dir() devuelva inmediatamente un valor falso (0) si no puede obtener una p\u00e1gina/folio del directorio."
}
],
"id": "CVE-2024-39469",
"lastModified": "2024-11-21T09:27:43.917",
"metrics": {},
"published": "2024-06-25T15:15:15.340",
"references": [
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/11a2edb70356a2202dcb7c9c189c8356ab4752cd"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/129dcd3e7d036218db3f59c82d82004b9539ed82"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/405b71f1251e5ae865f53bd27c45114e6c83bee3"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/59f14875a96ef93f05b82ad3c980605f2cb444b5"
},
{
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"url": "https://git.kernel.org/stable/c/7373a51e7998b508af7136530f3a997b286ce81c"
},
{
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"url": "https://git.kernel.org/stable/c/c77ad608df6c091fe64ecb91f41ef7cb465587f1"
},
{
"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"url": "https://git.kernel.org/stable/c/d18b05eda7fa77f02114f15b02c009f28ee42346"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/11a2edb70356a2202dcb7c9c189c8356ab4752cd"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/129dcd3e7d036218db3f59c82d82004b9539ed82"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/2ac8a2fe22bdde9eecce2a42cf5cab79333fb428"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/405b71f1251e5ae865f53bd27c45114e6c83bee3"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/59f14875a96ef93f05b82ad3c980605f2cb444b5"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/7373a51e7998b508af7136530f3a997b286ce81c"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/c77ad608df6c091fe64ecb91f41ef7cb465587f1"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://git.kernel.org/stable/c/d18b05eda7fa77f02114f15b02c009f28ee42346"
}
],
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"vulnStatus": "Awaiting Analysis"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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