FKIE_CVE-2026-64054

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-07-19 16:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net: shaper: reject duplicate leaves in GROUP request net_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES entries. When userspace supplies the same leaf handle twice, the same old-parent pointer lands twice in old_nodes[]. The cleanup loop double frees the parent. Of course the same parent may still be in old_nodes[] twice if we are moving multiple of its leaves. Note that this patch also implicitly fixes the fact that the i >= leaves_count path forgets to set ret.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/31767bf852b59f05125b58a17007e4cd1ea9eb2e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9a2fa1da619f276580b0d4c5d12efac89e8642b
Impacted products
Vendor Product Version
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{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/shaper/shaper.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75",
              "status": "affected",
              "version": "5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e",
              "versionType": "git"
            },
            {
              "lessThan": "31767bf852b59f05125b58a17007e4cd1ea9eb2e",
              "status": "affected",
              "version": "5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e",
              "versionType": "git"
            },
            {
              "lessThan": "a9a2fa1da619f276580b0d4c5d12efac89e8642b",
              "status": "affected",
              "version": "5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/shaper/shaper.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "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\nnet: shaper: reject duplicate leaves in GROUP request\n\nnet_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES\nentries. When userspace supplies the same leaf handle twice, the same\nold-parent pointer lands twice in old_nodes[]. The cleanup loop double\nfrees the parent. Of course the same parent may still be in old_nodes[]\ntwice if we are moving multiple of its leaves.\n\nNote that this patch also implicitly fixes the fact that the\ni \u003e= leaves_count path forgets to set ret."
    }
  ],
  "id": "CVE-2026-64054",
  "lastModified": "2026-07-19T16:17:45.830",
  "metrics": {},
  "published": "2026-07-19T16:17:45.830",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/31767bf852b59f05125b58a17007e4cd1ea9eb2e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a9a2fa1da619f276580b0d4c5d12efac89e8642b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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