{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncpumap: Zero-initialise xdp_rxq_info struct before running XDP program\n\nWhen running an XDP program that is attached to a cpumap entry, we don't\ninitialise the xdp_rxq_info data structure being used in the xdp_buff\nthat backs the XDP program invocation. Tobias noticed that this leads to\nrandom values being returned as the xdp_md->rx_queue_index value for XDP\nprograms running in a cpumap.\n\nThis means we're basically returning the contents of the uninitialised\nmemory, which is bad. Fix this by zero-initialising the rxq data\nstructure before running the XDP program."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/bpf/cpumap.c"
               ],
               "versions": [
                  {
                     "version": "9216477449f3",
                     "lessThan": "5f4e51abfbe6",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9216477449f3",
                     "lessThan": "f0363af9619c",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9216477449f3",
                     "lessThan": "3420b3ff1ff4",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9216477449f3",
                     "lessThan": "f562e4c4aab0",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9216477449f3",
                     "lessThan": "eaa7cb836659",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9216477449f3",
                     "lessThan": "2487007aa3b9",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "kernel/bpf/cpumap.c"
               ],
               "versions": [
                  {
                     "version": "5.9",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.9",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.213",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.152",
                     "lessThanOrEqual": "5.15.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.82",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.22",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.7.10",
                     "lessThanOrEqual": "6.7.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.8",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/5f4e51abfbe6eb444fa91906a5cd083044278297"
            },
            {
               "url": "https://git.kernel.org/stable/c/f0363af9619c77730764f10360e36c6445c12f7b"
            },
            {
               "url": "https://git.kernel.org/stable/c/3420b3ff1ff489c177ea1cb7bd9fbbc4e9a0be95"
            },
            {
               "url": "https://git.kernel.org/stable/c/f562e4c4aab00986dde3093c4be919c3f2b85a4a"
            },
            {
               "url": "https://git.kernel.org/stable/c/eaa7cb836659ced2d9f814ac32aa3ec193803ed6"
            },
            {
               "url": "https://git.kernel.org/stable/c/2487007aa3b9fafbd2cb14068f49791ce1d7ede5"
            }
         ],
         "title": "cpumap: Zero-initialise xdp_rxq_info struct before running XDP program",
         "x_generator": {
            "engine": "bippy-a5840b7849dd"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-27431",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}