FKIE_CVE-2026-74286

Vulnerability from fkie_nvd - Published: 2026-08-15 06:22 - Updated: 2026-08-17 06:19
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net: pfcp: allocate per-cpu tstats for PFCP netdevs PFCP uses dev_get_tstats64() as its ndo_get_stats64 callback, but pfcp_link_setup() does not request NETDEV_PCPU_STAT_TSTATS. The net core therefore leaves dev->tstats NULL for PFCP devices. Creating a PFCP rtnetlink device can immediately ask the new netdev for stats while building the RTM_NEWLINK notification. That reaches dev_get_tstats64() and dereferences the NULL dev->tstats pointer. Set pcpu_stat_type to NETDEV_PCPU_STAT_TSTATS during PFCP link setup so the net core allocates the storage expected by dev_get_tstats64().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24041543da8cd84eb5d8ae738c534372fff54820
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/51a1d9836acc76a1bd16170b2f4b35f11036593f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56b4ad500fd1282ef04db3c4beae5b54ab093a53
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/67e4b283de36d9eebf95acdea5d6674b6ef4b2f4
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/pfcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "56b4ad500fd1282ef04db3c4beae5b54ab093a53",
              "status": "affected",
              "version": "76c8764ef36a5d37ea2e551bda28ac7f028383ba",
              "versionType": "git"
            },
            {
              "lessThan": "51a1d9836acc76a1bd16170b2f4b35f11036593f",
              "status": "affected",
              "version": "76c8764ef36a5d37ea2e551bda28ac7f028383ba",
              "versionType": "git"
            },
            {
              "lessThan": "67e4b283de36d9eebf95acdea5d6674b6ef4b2f4",
              "status": "affected",
              "version": "76c8764ef36a5d37ea2e551bda28ac7f028383ba",
              "versionType": "git"
            },
            {
              "lessThan": "24041543da8cd84eb5d8ae738c534372fff54820",
              "status": "affected",
              "version": "76c8764ef36a5d37ea2e551bda28ac7f028383ba",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/pfcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "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\nnet: pfcp: allocate per-cpu tstats for PFCP netdevs\n\nPFCP uses dev_get_tstats64() as its ndo_get_stats64 callback, but\npfcp_link_setup() does not request NETDEV_PCPU_STAT_TSTATS.  The net\ncore therefore leaves dev-\u003etstats NULL for PFCP devices.\n\nCreating a PFCP rtnetlink device can immediately ask the new netdev for\nstats while building the RTM_NEWLINK notification.  That reaches\ndev_get_tstats64() and dereferences the NULL dev-\u003etstats pointer.\n\nSet pcpu_stat_type to NETDEV_PCPU_STAT_TSTATS during PFCP link setup so\nthe net core allocates the storage expected by dev_get_tstats64()."
    }
  ],
  "id": "CVE-2026-74286",
  "lastModified": "2026-08-17T06:19:22.497",
  "metrics": {},
  "published": "2026-08-15T06:22:28.127",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/24041543da8cd84eb5d8ae738c534372fff54820"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/51a1d9836acc76a1bd16170b2f4b35f11036593f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/56b4ad500fd1282ef04db3c4beae5b54ab093a53"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/67e4b283de36d9eebf95acdea5d6674b6ef4b2f4"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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