FKIE_CVE-2026-74464

Vulnerability from fkie_nvd - Published: 2026-08-15 13:17 - Updated: 2026-08-19 17:21
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix skb leak on flow key update failure during ct ovs_ct_execute() always steals or frees the skb on failure while ovs_flow_key_update() does not. So, if it fails and we return right away, the skb ends up leaked. Fix that by breaking instead and letting the common error handling code at the bottom of the loop to free the skb properly. This is a very unlikely scenario as it requires the packet to become unparseable by applying a set of actions on a previously parseable skb, but should be fixed nevertheless. Reported by Sashiko.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/22e0ca88090d89c128078062186b03bb5fdc4f98
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/393f3c72600ab6721d732a0ab245bc896c5b28fc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6cc523eaee72c4e91894136cff64946ae9de2cda
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/736e972f3f8a304158345223ac6e816166a467ce
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b77126b2915900f69f9fcf5d624a77c8e6d50c31
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc62e843bc48f933da765ce47079fd992e535794
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e0ba8eaef2a0d02a7a485e6a7157e47272b65cea
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e84dfaac50aab45ad8c670da43e3aa1f97bd2a41
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/openvswitch/actions.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b77126b2915900f69f9fcf5d624a77c8e6d50c31",
              "status": "affected",
              "version": "ec0d043d05e6e3c0c2fac5de922c800c027c6386",
              "versionType": "git"
            },
            {
              "lessThan": "6cc523eaee72c4e91894136cff64946ae9de2cda",
              "status": "affected",
              "version": "ec0d043d05e6e3c0c2fac5de922c800c027c6386",
              "versionType": "git"
            },
            {
              "lessThan": "22e0ca88090d89c128078062186b03bb5fdc4f98",
              "status": "affected",
              "version": "ec0d043d05e6e3c0c2fac5de922c800c027c6386",
              "versionType": "git"
            },
            {
              "lessThan": "736e972f3f8a304158345223ac6e816166a467ce",
              "status": "affected",
              "version": "ec0d043d05e6e3c0c2fac5de922c800c027c6386",
              "versionType": "git"
            },
            {
              "lessThan": "e84dfaac50aab45ad8c670da43e3aa1f97bd2a41",
              "status": "affected",
              "version": "ec0d043d05e6e3c0c2fac5de922c800c027c6386",
              "versionType": "git"
            },
            {
              "lessThan": "e0ba8eaef2a0d02a7a485e6a7157e47272b65cea",
              "status": "affected",
              "version": "ec0d043d05e6e3c0c2fac5de922c800c027c6386",
              "versionType": "git"
            },
            {
              "lessThan": "393f3c72600ab6721d732a0ab245bc896c5b28fc",
              "status": "affected",
              "version": "ec0d043d05e6e3c0c2fac5de922c800c027c6386",
              "versionType": "git"
            },
            {
              "lessThan": "bc62e843bc48f933da765ce47079fd992e535794",
              "status": "affected",
              "version": "ec0d043d05e6e3c0c2fac5de922c800c027c6386",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/openvswitch/actions.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "lessThan": "4.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.265",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.216",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.183",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.151",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.103",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "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: openvswitch: fix skb leak on flow key update failure during ct\n\novs_ct_execute() always steals or frees the skb on failure while\novs_flow_key_update() does not.  So, if it fails and we return right\naway, the skb ends up leaked.\n\nFix that by breaking instead and letting the common error handling\ncode at the bottom of the loop to free the skb properly.\n\nThis is a very unlikely scenario as it requires the packet to become\nunparseable by applying a set of actions on a previously parseable skb,\nbut should be fixed nevertheless.\n\nReported by Sashiko."
    }
  ],
  "id": "CVE-2026-74464",
  "lastModified": "2026-08-19T17:21:03.373",
  "metrics": {},
  "published": "2026-08-15T13:17:51.077",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/22e0ca88090d89c128078062186b03bb5fdc4f98"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/393f3c72600ab6721d732a0ab245bc896c5b28fc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6cc523eaee72c4e91894136cff64946ae9de2cda"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/736e972f3f8a304158345223ac6e816166a467ce"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b77126b2915900f69f9fcf5d624a77c8e6d50c31"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bc62e843bc48f933da765ce47079fd992e535794"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e0ba8eaef2a0d02a7a485e6a7157e47272b65cea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e84dfaac50aab45ad8c670da43e3aa1f97bd2a41"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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