CVE-2026-53227 (GCVE-0-2026-53227)
Vulnerability from cvelistv5
Published
2026-06-25 08:39
Modified
2026-06-25 08:39
Severity ?
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 893f139b9a6c00c097b9082a90f3041cfb3a0d20
Version: 893f139b9a6c00c097b9082a90f3041cfb3a0d20
Version: 893f139b9a6c00c097b9082a90f3041cfb3a0d20
Version: 893f139b9a6c00c097b9082a90f3041cfb3a0d20
Version: 893f139b9a6c00c097b9082a90f3041cfb3a0d20
Version: 893f139b9a6c00c097b9082a90f3041cfb3a0d20
Version: 893f139b9a6c00c097b9082a90f3041cfb3a0d20
Version: 893f139b9a6c00c097b9082a90f3041cfb3a0d20
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{
  "containers": {
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        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/openvswitch/datapath.c"
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              "version": "0",
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:39:27.229Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e248fb2e680deb2bd37bac551b72638fe4938a76"
        },
        {
          "url": "https://git.kernel.org/stable/c/0bb5b2dc1b90aa7dd1473fc8c4d813a29255ff8d"
        },
        {
          "url": "https://git.kernel.org/stable/c/971b1b37774f13acc5add0a2843f8598446b8598"
        },
        {
          "url": "https://git.kernel.org/stable/c/25fdf53698535fe8790237f5a8a9626791429785"
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        {
          "url": "https://git.kernel.org/stable/c/e3d509a1b71396e1452060dbf84a805fd1c3c549"
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          "url": "https://git.kernel.org/stable/c/ecc55aad3390129a87106841f4b68bf3d70c9264"
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          "url": "https://git.kernel.org/stable/c/895d1dd9057cde1687fa0f4286d47ceed0b82997"
        },
        {
          "url": "https://git.kernel.org/stable/c/ee30dd2909d8b98619f4341c70ec8dc8e155ab02"
        }
      ],
      "title": "net: openvswitch: fix possible kfree_skb of ERR_PTR",
      "x_generator": {
        "engine": "bippy-1.2.0"
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53227",
    "datePublished": "2026-06-25T08:39:27.229Z",
    "dateReserved": "2026-06-09T07:44:35.392Z",
    "dateUpdated": "2026-06-25T08:39:27.229Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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