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CVE-2026-98758VulnerabilityPublished Updated

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

Affects MicrosoftSource GCVE Database

0
Authoritative record:CVE-2026-98758· High

Not known to be exploited · fixed in ee8577de01c6b6c7dd1d76b52242c54d37a989f4 : patch Microsoft soon.

Data as of 28 Oct 2026, 09:29 UTC

Severity
High

Rated by Threat Radar · CVSS not yet scored by NVD

Patch
Available – fixed in ee8577de01c6b6c7dd1d76b52242c54d37a989f4, 41934f92e7a54d4080ac0b17aacc83224946785c, 432b58cd959e594909a581b4974396cdbc9d4ca1 +1

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Upgrade Linux to ee8577de01c6b6c7dd1d76b52242c54d37a989f4, 41934f92e7a54d4080ac0b17aacc83224946785c, 432b58cd959e594909a581b4974396cdbc9d4ca1 or 63b269ec537dc0fd26d0bd64872c26860d108c9d.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 62b5412b1f4afab27d8df90ddcabb8e1e11a00ad, < ee8577de01c6b6c7dd1d76b52242c54d37a989f4
Fixed in
  • ee8577de01c6b6c7dd1d76b52242c54d37a989f4
LinuxLinuxAffected
  • ≥ 62b5412b1f4afab27d8df90ddcabb8e1e11a00ad, < 41934f92e7a54d4080ac0b17aacc83224946785c
Fixed in
  • 41934f92e7a54d4080ac0b17aacc83224946785c
LinuxLinuxAffected
  • ≥ 62b5412b1f4afab27d8df90ddcabb8e1e11a00ad, < 432b58cd959e594909a581b4974396cdbc9d4ca1
Fixed in
  • 432b58cd959e594909a581b4974396cdbc9d4ca1
LinuxLinuxAffected
  • ≥ 62b5412b1f4afab27d8df90ddcabb8e1e11a00ad, < 63b269ec537dc0fd26d0bd64872c26860d108c9d
Fixed in
  • 63b269ec537dc0fd26d0bd64872c26860d108c9d
LinuxLinuxAffected
  • =6.4
Fixed in–

Description

A use-after-free vulnerability exists in the USB Type-C UCSI glink driver component in Microsoft products. This flaw occurs during the removal process, potentially leading to memory corruption.

References

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