CVE-2026-23071
regmap: Fix race condition in hwspinlock irqsave routine
Reported by linux · Published February 4, 2026
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.
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| kernel6.12-libbpf-static | Amazon Linux | 1:6.12.68-92.122.amzn2023 |
| perf6.12 | Amazon Linux | 1:6.12.68-92.122.amzn2023 |
| Linux | Linux | 4.15 |
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | 8698b9364710e7bac84b3af07dd410e39c8c2e08, 8698b9364710e7bac84b3af07dd410e39c8c2e08, 8698b9364710e7bac84b3af07dd410e39c8c2e08 |
| Linux | Linux | 4.15, 0, 5.10.249 |
| Linux | Linux | 6.19, 0, 5.10.249 |
| linux | linux_kernel | 4.15, 4.15, 4.15 |
Timeline
- Feb 4, 2026 CVE Published
- Feb 5, 2026 EPSS Score (30 in total, the first dated here)
- Mar 19, 2026 PoC Published (5 in total, the first dated here)
- Mar 22, 2026 Coalition ESS Score (2 in total, the first dated here)
- Jun 2, 2026 Security Advisory (130 in total, the first dated here)
- Sep 26, 2026 Distribution Patch (128 in total, the first dated here)
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