CVE-2026-98192: Linux kernel · wifi: wcn36xx: Fix potential use-after-free in TX ack timer teardown
Affects Linux kernelSource CVE Database V5
Not known to be exploited · fixed in d9be5e75530772fc31637070d51e5717d6aeaa2a : patch Linux kernel soon.
Data as of 26 Oct 2026, 20:22 UTC
Rated High by Threat Radar's AI analysis · CVSS not yet scored by NVD
- EPSS
- 0.1% chance of exploitation in 30 days – higher than 6% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in d9be5e75530772fc31637070d51e5717d6aeaa2a, c0df0878e9110909cf0bec6080d72d36401a0c89, 15e59e377facc87ce82228279d88efaa89fdbca5 +2
Exploitation evidence
Disclosed: evidence found.
CVE published 6 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: 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 26 Oct 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– |
AI-suggested
A fix is available and has been applied in the referenced commits. Users and administrators should update to the fixed Linux kernel versions that include the timer_shutdown_sync() change in the wcn36xx driver. No additional mitigation steps are indicated.
Description
A use-after-free vulnerability was identified and fixed in the Linux kernel's wcn36xx wireless driver affecting version 5.10. The issue arises during the teardown of the TX acknowledgment timer, where the timer callback may execute after the associated data structures have been freed, potentially leading to use-after-free conditions. The fix replaces timer_delete() with timer_shutdown_sync() to ensure the timer callback completes before resources are freed.
References
- git.kernel.org/stable/c/15e59e377facc87ce82228279d88efaa89fdbca5 (opens in a new tab)
- git.kernel.org/stable/c/3edabc965bcce49cbb2ec1c2b91f8a555a8ec8bd (opens in a new tab)
- git.kernel.org/stable/c/2bddc5d088cf430ecd913020472f1def32a36a3d (opens in a new tab)
- git.kernel.org/stable/c/c0df0878e9110909cf0bec6080d72d36401a0c89 (opens in a new tab)
- git.kernel.org/stable/c/d9be5e75530772fc31637070d51e5717d6aeaa2a (opens in a new tab)