{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngso: fix udp gso fraglist segmentation after pull from frag_list\n\nDetect gso fraglist skbs with corrupted geometry (see below) and\npass these to skb_segment instead of skb_segment_list, as the first\ncan segment them correctly.\n\nValid SKB_GSO_FRAGLIST skbs\n- consist of two or more segments\n- the head_skb holds the protocol headers plus first gso_size\n- one or more frag_list skbs hold exactly one segment\n- all but the last must be gso_size\n\nOptional datapath hooks such as NAT and BPF (bpf_skb_pull_data) can\nmodify these skbs, breaking these invariants.\n\nIn extreme cases they pull all data into skb linear. For UDP, this\ncauses a NULL ptr deref in __udpv4_gso_segment_list_csum at\nudp_hdr(seg->next)->dest.\n\nDetect invalid geometry due to pull, by checking head_skb size.\nDon't just drop, as this may blackhole a destination. Convert to be\nable to pass to regular skb_segment."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/ipv4/udp_offload.c"
               ],
               "versions": [
                  {
                     "version": "9fd1ff5d2ac7",
                     "lessThan": "080e6c9a3908",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9fd1ff5d2ac7",
                     "lessThan": "af3122f5fdc0",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9fd1ff5d2ac7",
                     "lessThan": "33e28acf42ee",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9fd1ff5d2ac7",
                     "lessThan": "3cd00d2e3655",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "9fd1ff5d2ac7",
                     "lessThan": "a1e40ac5b5e9",
                     "status": "affected",
                     "versionType": "git"
                  }
               ]
            },
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "affected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/ipv4/udp_offload.c"
               ],
               "versions": [
                  {
                     "version": "5.6",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "5.6",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.1.113",
                     "lessThanOrEqual": "6.1.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.6.55",
                     "lessThanOrEqual": "6.6.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.10.14",
                     "lessThanOrEqual": "6.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.11.3",
                     "lessThanOrEqual": "6.11.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "6.12-rc2",
                     "lessThanOrEqual": "*",
                     "status": "unaffected",
                     "versionType": "original_commit_for_fix"
                  }
               ]
            }
         ],
         "references": [
            {
               "url": "https://git.kernel.org/stable/c/080e6c9a3908de193a48f646c5ce1bfb15676ffc"
            },
            {
               "url": "https://git.kernel.org/stable/c/af3122f5fdc0d00581d6e598a668df6bf54c9daa"
            },
            {
               "url": "https://git.kernel.org/stable/c/33e28acf42ee863f332a958bfc2f1a284a3659df"
            },
            {
               "url": "https://git.kernel.org/stable/c/3cd00d2e3655fad3bda96dc1ebf17b6495f86fea"
            },
            {
               "url": "https://git.kernel.org/stable/c/a1e40ac5b5e9077fe1f7ae0eb88034db0f9ae1ab"
            }
         ],
         "title": "gso: fix udp gso fraglist segmentation after pull from frag_list",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-49978",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}