Vulnerability-Lookup

GHSA-MP79-8QQ6-QP9G

Vulnerability from github – Published: 2026-06-25 09:31 – Updated: 2026-06-25 09:31

Details

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.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53227"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-25T09:16:40Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: openvswitch: fix possible kfree_skb of ERR_PTR\n\nAfter the patch in the \"Fixes\" tag, the allocation of the \"reply\" skb\ncan happen either before or after locking the ovs_mutex.\n\nHowever, error cleanups still follow the classical reversed order,\nassuming \"reply\" is allocated before locking: it is freed after unlocking.\n\nIf \"reply\" allocation happens after locking the mutex and it fails,\n\"reply\" is left with an ERR_PTR, and execution jumps to the correspondent\ncleanup stage which will try to free an invalid pointer.\n\nFix this by setting the pointer to NULL after having saved its error\nvalue.",
  "id": "GHSA-mp79-8qq6-qp9g",
  "modified": "2026-06-25T09:31:22Z",
  "published": "2026-06-25T09:31:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53227"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25fdf53698535fe8790237f5a8a9626791429785"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/895d1dd9057cde1687fa0f4286d47ceed0b82997"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/971b1b37774f13acc5add0a2843f8598446b8598"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e248fb2e680deb2bd37bac551b72638fe4938a76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e3d509a1b71396e1452060dbf84a805fd1c3c549"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ecc55aad3390129a87106841f4b68bf3d70c9264"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-53227 (GCVE-0-2026-53227)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-25 08:39

Title

net: openvswitch: fix possible kfree_skb of ERR_PTR

Summary

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.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/e248fb2e680deb2bd…
https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd…
https://git.kernel.org/stable/c/971b1b37774f13acc…
https://git.kernel.org/stable/c/25fdf53698535fe87…
https://git.kernel.org/stable/c/e3d509a1b71396e14…
https://git.kernel.org/stable/c/ecc55aad3390129a8…
https://git.kernel.org/stable/c/895d1dd9057cde168…
https://git.kernel.org/stable/c/ee30dd2909d8b9861…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 893f139b9a6c00c097b9082a90f3041cfb3a0d20 , < e248fb2e680deb2bd37bac551b72638fe4938a76 (git) Affected: 893f139b9a6c00c097b9082a90f3041cfb3a0d20 , < 0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d (git) Affected: 893f139b9a6c00c097b9082a90f3041cfb3a0d20 , < 971b1b37774f13acc5add0a2843f8598446b8598 (git) Affected: 893f139b9a6c00c097b9082a90f3041cfb3a0d20 , < 25fdf53698535fe8790237f5a8a9626791429785 (git) Affected: 893f139b9a6c00c097b9082a90f3041cfb3a0d20 , < e3d509a1b71396e1452060dbf84a805fd1c3c549 (git) Affected: 893f139b9a6c00c097b9082a90f3041cfb3a0d20 , < ecc55aad3390129a87106841f4b68bf3d70c9264 (git) Affected: 893f139b9a6c00c097b9082a90f3041cfb3a0d20 , < 895d1dd9057cde1687fa0f4286d47ceed0b82997 (git) Affected: 893f139b9a6c00c097b9082a90f3041cfb3a0d20 , < ee30dd2909d8b98619f4341c70ec8dc8e155ab02 (git)
Linux	Linux	Affected: 3.16 Unaffected: 0 , < 3.16 (semver) Unaffected: 5.10.259 , ≤ 5.10.* (semver) Unaffected: 5.15.210 , ≤ 5.15.* (semver) Unaffected: 6.1.176 , ≤ 6.1.* (semver) Unaffected: 6.6.143 , ≤ 6.6.* (semver) Unaffected: 6.12.94 , ≤ 6.12.* (semver) Unaffected: 6.18.36 , ≤ 6.18.* (semver) Unaffected: 7.0.13 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/openvswitch/datapath.c"
          ],
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.10.259",
              "versionType": "semver"
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            {
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.1.*",
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              "status": "unaffected",
              "version": "6.6.143",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
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              "versionType": "original_commit_for_fix"
            }
          ]
        }
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        }
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      "providerMetadata": {
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        {
          "url": "https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02"
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      "title": "net: openvswitch: fix possible kfree_skb of ERR_PTR",
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      }
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    "datePublished": "2026-06-25T08:39:27.229Z",
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-MP79-8QQ6-QP9G

CVE-2026-53227 (GCVE-0-2026-53227)

Tags

Sightings

Nomenclature