fkie_cve-2023-52979
Vulnerability from fkie_nvd
Published
2025-03-27 17:15
Modified
2025-06-25 20:59
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
squashfs: harden sanity check in squashfs_read_xattr_id_table
While mounting a corrupted filesystem, a signed integer '*xattr_ids' can
become less than zero. This leads to the incorrect computation of 'len'
and 'indexes' values which can cause null-ptr-deref in copy_bio_to_actor()
or out-of-bounds accesses in the next sanity checks inside
squashfs_read_xattr_id_table().
Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsquashfs: harden sanity check in squashfs_read_xattr_id_table\n\nWhile mounting a corrupted filesystem, a signed integer \u0027*xattr_ids\u0027 can\nbecome less than zero. This leads to the incorrect computation of \u0027len\u0027\nand \u0027indexes\u0027 values which can cause null-ptr-deref in copy_bio_to_actor()\nor out-of-bounds accesses in the next sanity checks inside\nsquashfs_read_xattr_id_table().\n\nFound by Linux Verification Center (linuxtesting.org) with Syzkaller."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: squashfs: endurecimiento de la comprobaci\u00f3n de seguridad en squashfs_read_xattr_id_table. Al montar un sistema de archivos da\u00f1ado, un entero con signo \u0027*xattr_ids\u0027 puede ser menor que cero. Esto provoca el c\u00e1lculo incorrecto de los valores de \u0027len\u0027 e \u0027indexes\u0027, lo que puede causar un valor nulo de referencia de referencia (ptr) en copy_bio_to_actor() o accesos fuera de l\u00edmites en las siguientes comprobaciones de seguridad dentro de squashfs_read_xattr_id_table(). Encontrado por el Centro de Verificaci\u00f3n de Linux (linuxtesting.org) con Syzkaller."
}
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"id": "CVE-2023-52979",
"lastModified": "2025-06-25T20:59:20.347",
"metrics": {
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"attackComplexity": "LOW",
"attackVector": "LOCAL",
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"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"
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"published": "2025-03-27T17:15:45.057",
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"value": "CWE-476"
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"source": "nvd@nist.gov",
"type": "Primary"
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}
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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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