chained work check · workqueue: Fix NULL current_pwq deref
Affects MicrosoftSource GCVE Database
Not known to be exploited · fixed in b12a25fb2b9d5dac80e419d695450cc17a51fdfd : update Microsoft when convenient.
Data as of 7 Nov 2026, 12:32 UTC
Rated Medium by Threat Radar's AI analysis · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in b12a25fb2b9d5dac80e419d695450cc17a51fdfd, 54361e4924c2c52a501b74ef10217c32f45fccfa, 6877de2c75f0dd342099a1357856e6c8d474abc3 +5
Exploitation evidence
Disclosed: evidence found.
CVE published 23 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 7 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
CVE-2026-99058 is a vulnerability in Microsoft products version 3.0 and 4.0 involving a NULL pointer dereference in the workqueue subsystem during a chained work check. The issue could cause improper handling of workqueue pointers, potentially leading to application instability or crashes.