CVE-2024-50260

{"id": "CVE-2024-50260", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.7, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.0}]}, "published": "2024-11-09T11:15:11.550", "references": [{"url": "https://git.kernel.org/stable/c/740be3b9a6d73336f8c7d540842d0831dc7a808b", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}, {"url": "https://git.kernel.org/stable/c/9afe35fdda16e09d5bd3c49a68ba8c680dd678bd", "tags": ["Patch"], "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-476"}]}], "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 condici\u00f3n de ejecuci\u00f3n podr\u00eda desencadenar una desreferencia de puntero NULL: sock_map_link_detach(): sock_map_link_update_prog(): mutex_lock(&amp;sockmap_mutex); ... sockmap_link-&gt;map = NULL; mutex_unlock(&amp;sockmap_mutex); mutex_lock(&amp;sockmap_mutex); ... sock_map_prog_link_lookup(sockmap_link-&gt;map); mutex_unlock(&amp;sockmap_mutex); Solucione el problema a\u00f1adiendo una comprobaci\u00f3n de puntero NULL. En este caso espec\u00edfico, no tiene sentido actualizar un enlace que se est\u00e1 publicando."}], "lastModified": "2024-11-13T18:47:43.830", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FFF78B38-3E68-45EF-A942-449C644E7C34", "versionEndExcluding": "6.11.7", "versionStartIncluding": "6.10"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7F361E1D-580F-4A2D-A509-7615F73167A1"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "925478D0-3E3D-4E6F-ACD5-09F28D5DF82C"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "3C95E234-D335-4B6C-96BF-E2CEBD8654ED"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E0F717D8-3014-4F84-8086-0124B2111379"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:6.12:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "24DBE6C7-2AAE-4818-AED2-E131F153D2FA"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}