CVE-2026-23071

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux8698b9364710e7bac84b3af07dd410e39c8c2e08 < e1a7072bc4f958c9e852dc7e57e39f12b0bb44b5affected
LinuxLinux8698b9364710e7bac84b3af07dd410e39c8c2e08 < 766e243ae8c8b27087a4cc605752c0d5ee2daeabaffected
LinuxLinux8698b9364710e7bac84b3af07dd410e39c8c2e08 < f1e2fe26a51eca95b41420af76d22c2e613efd5eaffected
LinuxLinux8698b9364710e7bac84b3af07dd410e39c8c2e08 < 24f31be6ad70537fd7706269d99c92cade465a09affected
LinuxLinux8698b9364710e7bac84b3af07dd410e39c8c2e08 < 4aab0ca0a0f7760e33edcb4e47576064d05128f5affected
LinuxLinux8698b9364710e7bac84b3af07dd410e39c8c2e08 < c2d2cf710dc3ee1a69e00b4ed8de607a92a07889affected
LinuxLinux8698b9364710e7bac84b3af07dd410e39c8c2e08 < 4b58aac989c1e3fafb1c68a733811859df388250affected
LinuxLinux4.15affected
LinuxLinux0 < 4.15unaffected
LinuxLinux5.10.249 <= 5.10.*unaffected
LinuxLinux5.15.199 <= 5.15.*unaffected
LinuxLinux6.1.162 <= 6.1.*unaffected
LinuxLinux6.6.122 <= 6.6.*unaffected
LinuxLinux6.12.68 <= 6.12.*unaffected
LinuxLinux6.18.8 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References