Improper Locking Affecting linux-aws-6.12 package, versions <6.12.80-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.18% (7th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LINUXAWS612-15992298
  • published12 Apr 2026
  • disclosed9 May 2025

Introduced: 9 May 2025

CVE-2025-37880  (opens in a new tab)
CWE-667  (opens in a new tab)

How to fix?

Upgrade Chainguard linux-aws-6.12 to version 6.12.80-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linux-aws-6.12 package and not the linux-aws-6.12 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1