Bug 2436822 (CVE-2026-23071) - CVE-2026-23071 kernel: regmap: Fix race condition in hwspinlock irqsave routine
Summary: CVE-2026-23071 kernel: regmap: Fix race condition in hwspinlock irqsave routine
Keywords:
Status: NEW
Alias: CVE-2026-23071
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-04 17:05 UTC by OSIDB Bzimport
Modified: 2026-02-05 19:50 UTC (History)
0 users

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Description OSIDB Bzimport 2026-02-04 17:05:06 UTC
In the Linux kernel, the following vulnerability has been resolved:

regmap: Fix race condition in hwspinlock irqsave routine

Previously, the address of the shared member '&map->spinlock_flags' was
passed directly to 'hwspin_lock_timeout_irqsave'. This creates a race
condition where multiple contexts contending for the lock could overwrite
the shared flags variable, potentially corrupting the state for the
current lock owner.

Fix this by using a local stack variable 'flags' to store the IRQ state
temporarily.


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