CVE-2026-90135

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: net: add missing ref_tracker_dir_exit() to alloc_netdev_mqs() sashiko is reporting that trying to read /sys/kernel/debug/ref_tracker/* causes use-afer-free crash when either alloc_percpu() or dev_addr_init() in alloc_netdev_mqs() failed, for commit 4d92b95ff2f9 ("net: add net device refcount tracker infrastructure") added ref_tracker_dir_exit() to only free_netdev() path.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2026-09-17 17:17:06.053000

Last modified

2026-10-30 13:20:42.770000

View original CVE JSON

{
  "id": "CVE-2026-90135",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-17T17:17:06.053",
  "lastModified": "2026-10-30T13:20:42.770",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add missing ref_tracker_dir_exit() to alloc_netdev_mqs()\n\nsashiko is reporting that trying to read /sys/kernel/debug/ref_tracker/*\ncauses use-afer-free crash when either alloc_percpu() or dev_addr_init()\nin alloc_netdev_mqs() failed, for commit 4d92b95ff2f9 (\"net: add net device\nrefcount tracker infrastructure\") added ref_tracker_dir_exit() to only\nfree_netdev() path."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "net/core/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "4d92b95ff2f95f13df9bad0b5a25a9f60e72758d",
              "lessThan": "b0859020cab4ea6101478141aeec1b052ed80bdd",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4d92b95ff2f95f13df9bad0b5a25a9f60e72758d",
              "lessThan": "45be87c5195f34c0a51598bc91186f600be5c4c9",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4d92b95ff2f95f13df9bad0b5a25a9f60e72758d",
              "lessThan": "2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4d92b95ff2f95f13df9bad0b5a25a9f60e72758d",
              "lessThan": "5fe03b5257095e2beef0bc79e1f068fbd09a24c7",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4d92b95ff2f95f13df9bad0b5a25a9f60e72758d",
              "lessThan": "63ab05e8f9654aa100d366c0236399fda6ffaab1",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "4d92b95ff2f95f13df9bad0b5a25a9f60e72758d",
              "lessThan": "0b1c2af8a22c35cb099c735c2f63ea3ba757557d",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "net/core/dev.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "5.17",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "5.17",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.1.191",
              "lessThanOrEqual": "6.1.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.110",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.52",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0b1c2af8a22c35cb099c735c2f63ea3ba757557d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/45be87c5195f34c0a51598bc91186f600be5c4c9",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5fe03b5257095e2beef0bc79e1f068fbd09a24c7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/63ab05e8f9654aa100d366c0236399fda6ffaab1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b0859020cab4ea6101478141aeec1b052ed80bdd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ]
}