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CVE-2026-98623VulnerabilityPublished Updated

Microsoft · drm/nouveau/clk: fix list cursor use after loop in nvkm_clk_ustate_update

Affects MicrosoftSource GCVE Database

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Authoritative record:CVE-2026-98623· Medium

Not known to be exploited · fixed in db5dd9f47b4df1be322f498d846e9a82940a7390 : update Microsoft when convenient.

Data as of 2 Nov 2026, 10:58 UTC

Severity
Medium

Rated by Threat Radar · CVSS not yet scored by NVD

EPSS
0.1% chance of exploitation in 30 days – higher than 7% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in db5dd9f47b4df1be322f498d846e9a82940a7390, aff09d9e37e02dc60bde79035ac15b136d602259, a867abcfa85ab487066c3d3008a1ba905da04113 +5

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Oct 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: 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 2 Nov 2026.

What to do

Upgrade to a fixed release listed under Affected software.

Affected software

ProductAffectedFixed in
LinuxLinuxAffected
  • ≥ 7c856522069755ab9d163a24ac332cd3cb35fe30, < db5dd9f47b4df1be322f498d846e9a82940a7390
Fixed in
  • db5dd9f47b4df1be322f498d846e9a82940a7390
LinuxLinuxAffected
  • ≥ 7c856522069755ab9d163a24ac332cd3cb35fe30, < aff09d9e37e02dc60bde79035ac15b136d602259
Fixed in
  • aff09d9e37e02dc60bde79035ac15b136d602259
LinuxLinuxAffected
  • ≥ 7c856522069755ab9d163a24ac332cd3cb35fe30, < a867abcfa85ab487066c3d3008a1ba905da04113
Fixed in
  • a867abcfa85ab487066c3d3008a1ba905da04113
LinuxLinuxAffected
  • ≥ 7c856522069755ab9d163a24ac332cd3cb35fe30, < 391517da7fd54ae40e4a7fe1cc696217343b0061
Fixed in
  • 391517da7fd54ae40e4a7fe1cc696217343b0061
LinuxLinuxAffected
  • ≥ 7c856522069755ab9d163a24ac332cd3cb35fe30, < 5315c7bacfe274ddfe649d9556e9a341ffa812da
Fixed in
  • 5315c7bacfe274ddfe649d9556e9a341ffa812da
LinuxLinuxAffected
  • ≥ 7c856522069755ab9d163a24ac332cd3cb35fe30, < 492e9cfa12f35f7946ea1b78a19f1f9337d62248
Fixed in
  • 492e9cfa12f35f7946ea1b78a19f1f9337d62248

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

Description

A vulnerability identified as CVE-2026-98623 affects the drm/nouveau/clk component, specifically related to a use-after-loop issue in the nvkm_clk_ustate_update function. The affected software versions are 3.0 and 4.0. No CVSS score or detailed impact information is provided, and there is no indication of exploitation in the wild or available patches.

References

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