Riskcovery

CVE-2025-37880

um: work around sched_yield not yielding in time-travel mode

State
Published
Severity
Not scored
Published
May 9, 2025
Updated
May 11, 2026
Reserved
Apr 16, 2025

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 065038706f77a56754e8f0c2556dab7e22dfe577 to before 990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2Affected
  • 065038706f77a56754e8f0c2556dab7e22dfe577 to before 887c5c12e80c8424bd471122d2e8b6b462e12874Affected
LinuxLinux
  • 5.3Affected
  • before 5.3Not affected
  • 6.14.5 through 6.14.*Not affected
  • 6.15 and laterNot affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.