CVE-2026-53233 (GCVE-0-2026-53233)
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: netdev: fix double-free in netdev_nl_bind_rx_doit() Sashiko flags that genlmsg_reply() always consumes the skb. The error path calls nlmsg_free(rsp) so we can't jump directly to it. Let's not unbind, just propagate the error to the user. This is the typical way of handling genlmsg_reply() failures. They shouldn't happen unless user does something silly like calling the kernel with an already-full rcvbuf.
References
Impacted products
Vendor Product Version
Linux Linux Version: 170aafe35cb98e0f3fbacb446ea86389fbce22ea
Version: 170aafe35cb98e0f3fbacb446ea86389fbce22ea
Version: 170aafe35cb98e0f3fbacb446ea86389fbce22ea
Version: 170aafe35cb98e0f3fbacb446ea86389fbce22ea
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/core/netdev-genl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e055ca9205d3eb6aec3e5fe4ecc18abbbf18c599",
              "status": "affected",
              "version": "170aafe35cb98e0f3fbacb446ea86389fbce22ea",
              "versionType": "git"
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        },
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          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/core/netdev-genl.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.94",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.94",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.36",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.13",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "6.12",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetdev: fix double-free in netdev_nl_bind_rx_doit()\n\nSashiko flags that genlmsg_reply() always consumes the skb.\nThe error path calls nlmsg_free(rsp) so we can\u0027t jump directly\nto it. Let\u0027s not unbind, just propagate the error to the user.\nThis is the typical way of handling genlmsg_reply() failures.\nThey shouldn\u0027t happen unless user does something silly like\ncalling the kernel with an already-full rcvbuf."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:39:31.191Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e055ca9205d3eb6aec3e5fe4ecc18abbbf18c599"
        },
        {
          "url": "https://git.kernel.org/stable/c/c299321bc6232770ce378d6fa6bc46004d2d7fdb"
        },
        {
          "url": "https://git.kernel.org/stable/c/9b019376cbee10c4f9184d1745fa37d156e36f30"
        },
        {
          "url": "https://git.kernel.org/stable/c/c849de7d8757a7af801fc4a4058f71d481d367f2"
        }
      ],
      "title": "netdev: fix double-free in netdev_nl_bind_rx_doit()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53233",
    "datePublished": "2026-06-25T08:39:31.191Z",
    "dateReserved": "2026-06-09T07:44:35.393Z",
    "dateUpdated": "2026-06-25T08:39:31.191Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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