{
   "containers": {
      "cna": {
         "providerMetadata": {
            "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038"
         },
         "descriptions": [
            {
               "lang": "en",
               "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add more sanity checks to qdisc_pkt_len_init()\n\nOne path takes care of SKB_GSO_DODGY, assuming\nskb->len is bigger than hdr_len.\n\nvirtio_net_hdr_to_skb() does not fully dissect TCP headers,\nit only make sure it is at least 20 bytes.\n\nIt is possible for an user to provide a malicious 'GSO' packet,\ntotal length of 80 bytes.\n\n- 20 bytes of IPv4 header\n- 60 bytes TCP header\n- a small gso_size like 8\n\nvirtio_net_hdr_to_skb() would declare this packet as a normal\nGSO packet, because it would see 40 bytes of payload,\nbigger than gso_size.\n\nWe need to make detect this case to not underflow\nqdisc_skb_cb(skb)->pkt_len."
            }
         ],
         "affected": [
            {
               "product": "Linux",
               "vendor": "Linux",
               "defaultStatus": "unaffected",
               "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
               "programFiles": [
                  "net/core/dev.c"
               ],
               "versions": [
                  {
                     "version": "1def9238d4aa",
                     "lessThan": "566a931a1436",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1def9238d4aa",
                     "lessThan": "2415f465730e",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1def9238d4aa",
                     "lessThan": "27a8fabc54d2",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1def9238d4aa",
                     "lessThan": "9b0ee571d20a",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1def9238d4aa",
                     "lessThan": "ff1c3cadcf40",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1def9238d4aa",
                     "lessThan": "1eebe602a8d8",
                     "status": "affected",
                     "versionType": "git"
                  },
                  {
                     "version": "1def9238d4aa",
                     "lessThan": "ab9a9a9e9647",
                     "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/core/dev.c"
               ],
               "versions": [
                  {
                     "version": "3.9",
                     "status": "affected"
                  },
                  {
                     "version": "0",
                     "lessThan": "3.9",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.10.227",
                     "lessThanOrEqual": "5.10.*",
                     "status": "unaffected",
                     "versionType": "custom"
                  },
                  {
                     "version": "5.15.168",
                     "lessThanOrEqual": "5.15.*",
                     "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/566a931a1436d0e0ad13708ea55479b95426213c"
            },
            {
               "url": "https://git.kernel.org/stable/c/2415f465730e48b6e38da1c7c097317bf5dd2d20"
            },
            {
               "url": "https://git.kernel.org/stable/c/27a8fabc54d2f960d47bdfbebf2bdc6e8a92a4c4"
            },
            {
               "url": "https://git.kernel.org/stable/c/9b0ee571d20a238a22722126abdfde61f1b2bdd0"
            },
            {
               "url": "https://git.kernel.org/stable/c/ff1c3cadcf405ab37dd91418a62a7acecf3bc5e2"
            },
            {
               "url": "https://git.kernel.org/stable/c/1eebe602a8d8264a12e35e39d0645fa88dbbacdd"
            },
            {
               "url": "https://git.kernel.org/stable/c/ab9a9a9e9647392a19e7a885b08000e89c86b535"
            }
         ],
         "title": "net: add more sanity checks to qdisc_pkt_len_init()",
         "x_generator": {
            "engine": "bippy-c9c4e1df01b2"
         }
      }
   },
   "cveMetadata": {
      "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038",
      "cveID": "CVE-2024-49948",
      "requesterUserId": "gregkh@kernel.org",
      "serial": "1",
      "state": "PUBLISHED"
   },
   "dataType": "CVE_RECORD",
   "dataVersion": "5.0"
}