{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4e893ca8117022de68ce1b61c0309e3d17bb8a25"
            },
            {
              "fixed": "d19f98c79f1b7e09e4cdf5c20d626e571e487467"
            },
            {
              "fixed": "64561afb42d8390695bf810d9bbd087cbca00291"
            },
            {
              "fixed": "0a9750263ffacbbd2048a391fd4bd22e2146c57d"
            },
            {
              "fixed": "6e4cf281558709b92ec2ca3054fe2ffc69266ef9"
            },
            {
              "fixed": "36ac05f7cfd59d90c597071304b14e98090d5dd1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.12.0"
            },
            {
              "fixed": "6.12.108"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.49"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.13"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "7.2.0"
            },
            {
              "fixed": "7.2.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80862.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: fix usage of page_frag_cache\n\nnvme uses page_frag_cache to preallocate PDU for each preallocated request\nof block device. Block devices are created in parallel threads,\nconsequently page_frag_cache is used in not thread-safe manner.\nThat leads to incorrect refcounting of backstore pages and premature free.\n\nThat can be catched by !sendpage_ok inside network stack:\n\nWARNING: CPU: 7 PID: 467 at ../net/core/skbuff.c:6931 skb_splice_from_iter+0xfa/0x310.\n\ttcp_sendmsg_locked+0x782/0xce0\n\ttcp_sendmsg+0x27/0x40\n\tsock_sendmsg+0x8b/0xa0\n\tnvme_tcp_try_send_cmd_pdu+0x149/0x2a0\nThen random panic may occur.\n\nFix that by serializing the usage of page_frag_cache.",
  "id": "CVE-2026-80862",
  "modified": "2026-09-06T03:30:39.536331973Z",
  "published": "2026-09-04T15:55:16.653Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0a9750263ffacbbd2048a391fd4bd22e2146c57d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/36ac05f7cfd59d90c597071304b14e98090d5dd1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64561afb42d8390695bf810d9bbd087cbca00291"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e4cf281558709b92ec2ca3054fe2ffc69266ef9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d19f98c79f1b7e09e4cdf5c20d626e571e487467"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80862.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80862"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nvme-tcp: fix usage of page_frag_cache"
}