fkie_cve-2024-50260
Vulnerability from fkie_nvd
Published
2024-11-09 11:15
Modified
2024-11-13 18:47
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved:
sock_map: fix a NULL pointer dereference in sock_map_link_update_prog()
The following race condition could trigger a NULL pointer dereference:
sock_map_link_detach(): sock_map_link_update_prog():
mutex_lock(&sockmap_mutex);
...
sockmap_link->map = NULL;
mutex_unlock(&sockmap_mutex);
mutex_lock(&sockmap_mutex);
...
sock_map_prog_link_lookup(sockmap_link->map);
mutex_unlock(&sockmap_mutex);
<continue>
Fix it by adding a NULL pointer check. In this specific case, it makes
no sense to update a link which is being released.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
linux | linux_kernel | * | |
linux | linux_kernel | 6.12 | |
linux | linux_kernel | 6.12 | |
linux | linux_kernel | 6.12 | |
linux | linux_kernel | 6.12 | |
linux | linux_kernel | 6.12 |
{ configurations: [ { nodes: [ { cpeMatch: [ { criteria: "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", matchCriteriaId: "FFF78B38-3E68-45EF-A942-449C644E7C34", versionEndExcluding: "6.11.7", versionStartIncluding: "6.10", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", matchCriteriaId: "7F361E1D-580F-4A2D-A509-7615F73167A1", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", matchCriteriaId: "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", matchCriteriaId: "3C95E234-D335-4B6C-96BF-E2CEBD8654ED", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*", matchCriteriaId: "E0F717D8-3014-4F84-8086-0124B2111379", vulnerable: true, }, { criteria: "cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*", matchCriteriaId: "24DBE6C7-2AAE-4818-AED2-E131F153D2FA", vulnerable: true, }, ], negate: false, operator: "OR", }, ], }, ], cveTags: [], descriptions: [ { lang: "en", value: "In the Linux kernel, the following vulnerability has been resolved:\n\nsock_map: fix a NULL pointer dereference in sock_map_link_update_prog()\n\nThe following race condition could trigger a NULL pointer dereference:\n\nsock_map_link_detach():\t\tsock_map_link_update_prog():\n mutex_lock(&sockmap_mutex);\n ...\n sockmap_link->map = NULL;\n mutex_unlock(&sockmap_mutex);\n \t\t\t\t mutex_lock(&sockmap_mutex);\n\t\t\t\t ...\n\t\t\t\t sock_map_prog_link_lookup(sockmap_link->map);\n\t\t\t\t mutex_unlock(&sockmap_mutex);\n <continue>\n\nFix it by adding a NULL pointer check. In this specific case, it makes\nno sense to update a link which is being released.", }, { lang: "es", value: "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: sock_map: corrige una desreferencia de puntero NULL en sock_map_link_update_prog() La siguiente condición de ejecución podría desencadenar una desreferencia de puntero NULL: sock_map_link_detach(): sock_map_link_update_prog(): mutex_lock(&sockmap_mutex); ... sockmap_link->map = NULL; mutex_unlock(&sockmap_mutex); mutex_lock(&sockmap_mutex); ... sock_map_prog_link_lookup(sockmap_link->map); mutex_unlock(&sockmap_mutex); Solucione el problema añadiendo una comprobación de puntero NULL. En este caso específico, no tiene sentido actualizar un enlace que se está publicando.", }, ], id: "CVE-2024-50260", lastModified: "2024-11-13T18:47:43.830", metrics: { cvssMetricV31: [ { cvssData: { attackComplexity: "HIGH", attackVector: "LOCAL", availabilityImpact: "HIGH", baseScore: 4.7, baseSeverity: "MEDIUM", confidentialityImpact: "NONE", integrityImpact: "NONE", privilegesRequired: "LOW", scope: "UNCHANGED", userInteraction: "NONE", vectorString: "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", version: "3.1", }, exploitabilityScore: 1, impactScore: 3.6, source: "nvd@nist.gov", type: "Primary", }, ], }, published: "2024-11-09T11:15:11.550", references: [ { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/740be3b9a6d73336f8c7d540842d0831dc7a808b", }, { source: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", tags: [ "Patch", ], url: "https://git.kernel.org/stable/c/9afe35fdda16e09d5bd3c49a68ba8c680dd678bd", }, ], sourceIdentifier: "416baaa9-dc9f-4396-8d5f-8c081fb06d67", vulnStatus: "Analyzed", weaknesses: [ { description: [ { lang: "en", value: "CWE-476", }, ], source: "nvd@nist.gov", type: "Primary", }, ], }
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Sightings
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Nomenclature
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