CVE-2026-23071 regmap: Fix race condition in hwspinlock irqsave routine
A race condition in the Linux kernel regmap hwspinlock routine can corrupt lock state, potentially leading to system instability or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-23071?
CVE-2026-23071 is a medium-severity vulnerability in Linux kernel, published on 4 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-362
Which versions are affected by CVE-2026-23071?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23071?
Apply the vendor's patch.
Is CVE-2026-23071 being exploited?
There is no known exploitation of CVE-2026-23071 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as AZL-77199, BELL-CVE-2026-23071, DEBIAN-CVE-2026-23071, GHSA-q825-wqg2-gxm8, ROOT-OS-DEBIAN-11-CVE-2026-23071, ROOT-OS-DEBIAN-12-CVE-2026-23071 and 4 more.