CVE-2026-64238: Linux kernel · gpio: shared: fix deadlock on shared proxy's parent removal
Affects Linux kernelSource GCVE Database
Not known to be exploited · fixed in 6.19.12 : update Linux kernel when convenient.
Data as of 8 Nov 2026, 16:36 UTC
Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- Patch
- Available – fixed in 6.19.12
Exploitation evidence
Disclosed: evidence found.
CVE published 24 Jul 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 8 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Linux Linux | Affected
| Fixed in– |
AI-suggested
A fix is available in Linux kernel version 6.19.12, which includes the patch that shortens the critical section and updates locking documentation. Users and administrators should upgrade to this version or later to remediate the deadlock issue.
Description
A deadlock vulnerability was identified and fixed in the Linux kernel's GPIO shared proxy implementation. The issue involved an overly broad critical section protecting the offset field in the gpio_shared_entry structure, which could cause a deadlock during the removal of the shared GPIO proxy's parent. The fix reduces the critical section to only protect the offset field when it is read and updates documentation to clarify locking behavior.