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CVE PROGRAM SOURCE RECORDUnscored

CVE-2025-37880

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

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 065038706f77a56754e8f0c2556dab7e22dfe577 to < 990ddc65173776f1e01e7135d8c1fd5f8fd4d5d2affected
  • 065038706f77a56754e8f0c2556dab7e22dfe577 to < 887c5c12e80c8424bd471122d2e8b6b462e12874affected

Linux Linux

Default version status: affected

  • 5.3affected
  • 0 to < 5.3unaffected
  • 6.14.5 to ≤ 6.14.*unaffected
  • 6.15 to ≤ *unaffected

References