CVE-2025-37880
um: work around sched_yield not yielding in time-travel mode
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | May 9, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
065038706f77a56754e8f0c2556dab7e22dfe577 < 990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2 065038706f77a56754e8f0c2556dab7e22dfe577 < 887c5c12e80c8424bd471122d2e8b6b462e12874
Linux / Linux
5.3