fkie_cve-2024-50260
Vulnerability from fkie_nvd
Published
2024-11-09 11:15
Modified
2024-11-13 18:47
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.
Impacted products



{
   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(&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 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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