CVE-2026-98758

Status: ReceivedUnscored—

Severity—Unscored

Exploitation probability0.17 %higher than 6% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

In the Linux kernel, the following vulnerability has been resolved:

usb: typec: ucsi: glink: fix use-after-free of ucsi on remove

The pmic_glink client is released by the devres cleanup, which runs after pmic_glink_ucsi_remove() has returned, so its notification callbacks can queue work until then. Work that runs after ucsi_unregister() has been called touches freed state: it dereferences the connector array that ucsi_unregister() freed, or registers and unregisters the instance a second time.

Disable both work items with disable_work_sync() before unregistering, and unregister only if the instance is still registered.

Read full descriptionShow less

This issue was found by an in-house static analysis tool.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.17 %
Percentile among all scored CVEs: 6
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Show 4 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-98758",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "62b5412b1f4afab27d8df90ddcabb8e1e11a00ad",
              "lessThan": "432b58cd959e594909a581b4974396cdbc9d4ca1",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "62b5412b1f4afab27d8df90ddcabb8e1e11a00ad",
              "lessThan": "41934f92e7a54d4080ac0b17aacc83224946785c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "62b5412b1f4afab27d8df90ddcabb8e1e11a00ad",
              "lessThan": "ee8577de01c6b6c7dd1d76b52242c54d37a989f4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "62b5412b1f4afab27d8df90ddcabb8e1e11a00ad",
              "lessThan": "63b269ec537dc0fd26d0bd64872c26860d108c9d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/typec/ucsi/ucsi_glink.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.113",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.56",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/typec/ucsi/ucsi_glink.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-18T16:17:29.607",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/41934f92e7a54d4080ac0b17aacc83224946785c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/432b58cd959e594909a581b4974396cdbc9d4ca1",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/63b269ec537dc0fd26d0bd64872c26860d108c9d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ee8577de01c6b6c7dd1d76b52242c54d37a989f4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: typec: ucsi: glink: fix use-after-free of ucsi on remove\n\nThe pmic_glink client is released by the devres cleanup, which runs\nafter pmic_glink_ucsi_remove() has returned, so its notification\ncallbacks can queue work until then. Work that runs after\nucsi_unregister() has been called touches freed state: it dereferences\nthe connector array that ucsi_unregister() freed, or registers and\nunregisters the instance a second time.\n\nDisable both work items with disable_work_sync() before unregistering,\nand unregister only if the instance is still registered.\n\nThis issue was found by an in-house static analysis tool."
    }
  ],
  "lastModified": "2026-10-19T10:19:39.920",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}