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FKIE_CVE-2026-74718

Vulnerability from fkie_nvd - Published: 2026-08-22 16:16 - Updated: 2026-08-22 16:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: devlink: fix net namespace reference leak in reload devlink_nl_reload_doit() calls devlink_netns_get(), which returns a net with a held reference. When the requested namespace differs from the current one and the reload action is not DRIVER_REINIT, the function returns -EOPNOTSUPP without releasing the reference. Add the missing put_net() on this error path.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1c4dac9bf1d2ac31da63b794bdec697777cbd0fd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b02c6d2a3cd2cd669f5c16685779f84328ae60c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7b6552e53426ea0539c667bbc5a524fdf7feae6f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bf0797b92be591ac71d7c0f610e695caca3c72c9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eda60c85b4f4c7d66b7141a5fe020b1a7f395341
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/devlink/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7b6552e53426ea0539c667bbc5a524fdf7feae6f",
              "status": "affected",
              "version": "2edd92570441dd33246210042dc167319a5cf7e3",
              "versionType": "git"
            },
            {
              "lessThan": "bf0797b92be591ac71d7c0f610e695caca3c72c9",
              "status": "affected",
              "version": "2edd92570441dd33246210042dc167319a5cf7e3",
              "versionType": "git"
            },
            {
              "lessThan": "7b02c6d2a3cd2cd669f5c16685779f84328ae60c",
              "status": "affected",
              "version": "2edd92570441dd33246210042dc167319a5cf7e3",
              "versionType": "git"
            },
            {
              "lessThan": "eda60c85b4f4c7d66b7141a5fe020b1a7f395341",
              "status": "affected",
              "version": "2edd92570441dd33246210042dc167319a5cf7e3",
              "versionType": "git"
            },
            {
              "lessThan": "1c4dac9bf1d2ac31da63b794bdec697777cbd0fd",
              "status": "affected",
              "version": "2edd92570441dd33246210042dc167319a5cf7e3",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/devlink/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.152",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.104",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.45",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.9",
              "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\ndevlink: fix net namespace reference leak in reload\n\ndevlink_nl_reload_doit() calls devlink_netns_get(), which returns a net\nwith a held reference. When the requested namespace differs from the\ncurrent one and the reload action is not DRIVER_REINIT, the function\nreturns -EOPNOTSUPP without releasing the reference. Add the missing\nput_net() on this error path."
    }
  ],
  "id": "CVE-2026-74718",
  "lastModified": "2026-08-22T16:16:46.710",
  "metrics": {},
  "published": "2026-08-22T16:16:46.710",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1c4dac9bf1d2ac31da63b794bdec697777cbd0fd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7b02c6d2a3cd2cd669f5c16685779f84328ae60c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7b6552e53426ea0539c667bbc5a524fdf7feae6f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/bf0797b92be591ac71d7c0f610e695caca3c72c9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/eda60c85b4f4c7d66b7141a5fe020b1a7f395341"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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