CVE-2025-37880
N/A
N/A
Summary
In the Linux kernel, the following vulnerability has been resolved:
um: work around sched_yield not yielding in time-travel mode
sched_yield by a userspace may not actually cause scheduling in time-travel mode as no time has passed. In the case seen it appears to be a badly implemented userspace spinlock in ASAN. Unfortunately, with time-travel it causes an extreme slowdown or even deadlock depending on the kernel configuration (CONFIG_UML_MAX_USERSPACE_ITERATIONS).
Work around it by accounting time to the process whenever it executes a sched_yield syscall.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 065038706f77a56754e8f0c2556dab7e22dfe577 < 990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2 | affected |
| Linux | Linux | 065038706f77a56754e8f0c2556dab7e22dfe577 < 887c5c12e80c8424bd471122d2e8b6b462e12874 | affected |
| Linux | Linux | 5.3 | affected |
| Linux | Linux | 0 < 5.3 | unaffected |
| Linux | Linux | 6.14.5 <= 6.14.* | unaffected |
| Linux | Linux | 6.15 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2
- https://git.kernel.org/stable/c/887c5c12e80c8424bd471122d2e8b6b462e12874
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