fkie_cve-2022-48740
Vulnerability from fkie_nvd
Published
2024-06-20 12:15
Modified
2025-05-27 18:31
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
selinux: fix double free of cond_list on error paths
On error path from cond_read_list() and duplicate_policydb_cond_list()
the cond_list_destroy() gets called a second time in caller functions,
resulting in NULL pointer deref. Fix this by resetting the
cond_list_len to 0 in cond_list_destroy(), making subsequent calls a
noop.
Also consistently reset the cond_list pointer to NULL after freeing.
[PM: fix line lengths in the description]
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | * | |
| linux | linux_kernel | 5.17 | |
| linux | linux_kernel | 5.17 |
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: fix double free of cond_list on error paths\n\nOn error path from cond_read_list() and duplicate_policydb_cond_list()\nthe cond_list_destroy() gets called a second time in caller functions,\nresulting in NULL pointer deref. Fix this by resetting the\ncond_list_len to 0 in cond_list_destroy(), making subsequent calls a\nnoop.\n\nAlso consistently reset the cond_list pointer to NULL after freeing.\n\n[PM: fix line lengths in the description]"
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: selinux: corrige el doble libre de cond_list en rutas de error En la ruta de error de cond_read_list() y duplicado_policydb_cond_list(), se llama a cond_list_destroy() por segunda vez en las funciones de llamada, lo que resulta en un puntero NULL deref. Solucione este problema restableciendo cond_list_len a 0 en cond_list_destroy(), haciendo que las llamadas posteriores sean un error. Tambi\u00e9n restablezca constantemente el puntero cond_list a NULL despu\u00e9s de liberarlo. [PM: corrija la longitud de las l\u00edneas en la descripci\u00f3n]"
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"id": "CVE-2022-48740",
"lastModified": "2025-05-27T18:31:42.603",
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"confidentialityImpact": "HIGH",
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"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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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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