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FKIE_CVE-2026-80862

Vulnerability from fkie_nvd - Published: 2026-09-04 16:18 - Updated: 2026-09-04 16:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix usage of page_frag_cache nvme uses page_frag_cache to preallocate PDU for each preallocated request of block device. Block devices are created in parallel threads, consequently page_frag_cache is used in not thread-safe manner. That leads to incorrect refcounting of backstore pages and premature free. That can be catched by !sendpage_ok inside network stack: WARNING: CPU: 7 PID: 467 at ../net/core/skbuff.c:6931 skb_splice_from_iter+0xfa/0x310. tcp_sendmsg_locked+0x782/0xce0 tcp_sendmsg+0x27/0x40 sock_sendmsg+0x8b/0xa0 nvme_tcp_try_send_cmd_pdu+0x149/0x2a0 Then random panic may occur. Fix that by serializing the usage of page_frag_cache.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0a9750263ffacbbd2048a391fd4bd22e2146c57d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36ac05f7cfd59d90c597071304b14e98090d5dd1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/64561afb42d8390695bf810d9bbd087cbca00291
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e4cf281558709b92ec2ca3054fe2ffc69266ef9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d19f98c79f1b7e09e4cdf5c20d626e571e487467
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/tcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "d19f98c79f1b7e09e4cdf5c20d626e571e487467",
              "status": "affected",
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "versionType": "git"
            },
            {
              "lessThan": "64561afb42d8390695bf810d9bbd087cbca00291",
              "status": "affected",
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "versionType": "git"
            },
            {
              "lessThan": "0a9750263ffacbbd2048a391fd4bd22e2146c57d",
              "status": "affected",
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "versionType": "git"
            },
            {
              "lessThan": "6e4cf281558709b92ec2ca3054fe2ffc69266ef9",
              "status": "affected",
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "versionType": "git"
            },
            {
              "lessThan": "36ac05f7cfd59d90c597071304b14e98090d5dd1",
              "status": "affected",
              "version": "4e893ca8117022de68ce1b61c0309e3d17bb8a25",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/nvme/host/tcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.108",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.49",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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",
  "lastModified": "2026-09-04T16:18:15.420",
  "metrics": {},
  "published": "2026-09-04T16:18:15.420",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0a9750263ffacbbd2048a391fd4bd22e2146c57d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/36ac05f7cfd59d90c597071304b14e98090d5dd1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/64561afb42d8390695bf810d9bbd087cbca00291"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6e4cf281558709b92ec2ca3054fe2ffc69266ef9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d19f98c79f1b7e09e4cdf5c20d626e571e487467"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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