regmap: Fix race condition in hwspinlock irqsave routine
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 99% of all CVEs
observed exploitation
nono source reports it
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.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/24f31be6ad70537fd7706269d99c92cade465a09https://git.kernel.org/stable/c/4aab0ca0a0f7760e33edcb4e47576064d05128f5https://git.kernel.org/stable/c/4b58aac989c1e3fafb1c68a733811859df388250https://git.kernel.org/stable/c/766e243ae8c8b27087a4cc605752c0d5ee2daeabhttps://git.kernel.org/stable/c/c2d2cf710dc3ee1a69e00b4ed8de607a92a07889https://git.kernel.org/stable/c/e1a7072bc4f958c9e852dc7e57e39f12b0bb44b5https://git.kernel.org/stable/c/f1e2fe26a51eca95b41420af76d22c2e613efd5e