CVE-2025-37880 — Improper Locking in Linux

CWE-667 — Improper Locking12 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.1%
top 81.11%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
8
LinuxLinux KernelDebian Linux+5 more
Timeline
PublishedMay 9
Latest updateJul 8

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 accounti…

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages10 packages

▶NVDlinux/linux_kernel< 6.14.5
▶Debianlinux/linux_kernel< 6.16.3-1
▶Ubuntulinux/linux_kernel< 6.14.0-22.22

Patches

Patch: git.kernel.org ↗Patch: git.kernel.org ↗

🔴Vulnerability Details

5
OSV
linux-aws, linux-oracle vulnerabilities↗2025-07-08
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OSV
linux-azure vulnerabilities↗2025-06-26
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OSV
linux, linux-gcp, linux-raspi, linux-realtime vulnerabilities↗2025-06-24
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OSV
CVE-2025-37880: 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 user↗2025-05-09
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GHSA
GHSA-v3qr-5fr6-xpwv: 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 us↗2025-05-09
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📋Vendor Advisories

6
Ubuntu
Linux kernel vulnerabilities↗2025-07-08
▶
Ubuntu
Linux kernel (Azure) vulnerabilities↗2025-06-26
▶
Ubuntu
Linux kernel vulnerabilities↗2025-06-24
▶
Microsoft
um: work around sched_yield not yielding in time-travel mode↗2025-05-13
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Red Hat
kernel: um: work around sched_yield not yielding in time-travel mode↗2025-05-09
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