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net: openvswitch: fix possible kfree_skb of ERR_PTR

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: net: openvswitch: fix possible kfree_skb of ERR_PTR After the patch in the "Fixes" tag, the allocation of the "reply" skb can happen either before or after locking the ovs_mutex. However, error cleanups still follow the classical reversed order, assuming "reply" is allocated before locking: it is freed after unlocking. If "reply" allocation happens after locking the mutex and it fails, "reply" is left with an ERR_PTR, and execution jumps to the correspondent cleanup stage which will try to free an invalid pointer. Fix this by setting the pointer to NULL after having saved its error value.

Announced Source revision 1
Original source ↗

CVE-2026-53227

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-53227

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "893f139b9a6c00c097b9082a90f3041cfb3a0d20",
        "lessThan": "e248fb2e680deb2bd37bac551b72638fe4938a76",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "893f139b9a6c00c097b9082a90f3041cfb3a0d20",
        "lessThan": "0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "893f139b9a6c00c097b9082a90f3041cfb3a0d20",
        "lessThan": "971b1b37774f13acc5add0a2843f8598446b8598",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "893f139b9a6c00c097b9082a90f3041cfb3a0d20",
        "lessThan": "25fdf53698535fe8790237f5a8a9626791429785",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "893f139b9a6c00c097b9082a90f3041cfb3a0d20",
        "lessThan": "e3d509a1b71396e1452060dbf84a805fd1c3c549",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "893f139b9a6c00c097b9082a90f3041cfb3a0d20",
        "lessThan": "ecc55aad3390129a87106841f4b68bf3d70c9264",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "893f139b9a6c00c097b9082a90f3041cfb3a0d20",
        "lessThan": "895d1dd9057cde1687fa0f4286d47ceed0b82997",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "893f139b9a6c00c097b9082a90f3041cfb3a0d20",
        "lessThan": "ee30dd2909d8b98619f4341c70ec8dc8e155ab02",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "net/openvswitch/datapath.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.16"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.16",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.259",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.210",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.176",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.143",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.94",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.36",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.13",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "net/openvswitch/datapath.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-53227

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#28439 · Revision 1
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Publisher date
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