{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8d95dc474f85481652a0e422d2f1f079de81f63c"
            },
            {
              "fixed": "9e636c995b7beeb74ea882968248752821c244c4"
            },
            {
              "fixed": "0cde3a004119db637b401c54e77536e4145fc0b4"
            },
            {
              "fixed": "848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac"
            },
            {
              "fixed": "f2bb3434544454099a5b6dec213567267b05d79d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.10.0"
            },
            {
              "fixed": "6.12.94"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.36"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.13"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53235.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add pskb_may_pull() to skb_gro_receive_list()\n\nskb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without\nfirst ensuring the data is in the linear area via pskb_may_pull(). When\nthe skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in\npage fragments) while skb_gro_offset is non-zero (after IP+TCP header\nparsing). The skb_pull() then decrements skb-\u003elen by skb_gro_offset\nbut skb-\u003edata_len stays unchanged, hitting BUG_ON(skb-\u003elen \u003c skb-\u003edata_len)\nin __skb_pull().\n\nThe UDP fraglist GRO path already contains this guard at\nudp_offload.c:749. Adding it to skb_gro_receive_list() itself provides\ncentralized protection for all callers (TCP, UDP, and any future\nprotocols), and ensures the precondition of skb_pull() is satisfied\nbefore it is called.\n\nOn pskb_may_pull() failure, set NAPI_GRO_CB(skb)-\u003eflush = 1 so the\nskb is not held as a new GRO head and is instead delivered through the\nnormal receive path, matching the UDP handling.",
  "id": "CVE-2026-53235",
  "modified": "2026-07-08T05:37:05.500304143Z",
  "published": "2026-06-25T08:39:32.518Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0cde3a004119db637b401c54e77536e4145fc0b4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e636c995b7beeb74ea882968248752821c244c4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2bb3434544454099a5b6dec213567267b05d79d"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53235.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53235"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "net: add pskb_may_pull() to skb_gro_receive_list()"
}