CVE-2025-37880
um: work around sched_yield not yielding in time-travel mode
CVE-2025-37880 is fixed in 36 products on 1 platform, first by DEBIAN-CVE-2025-37880, released May 9, 2025. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.5
Low
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| kernel-uek · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-doc · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-doc · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-tools · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-tools · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| linux · Debian 14 | 6.16.3-1 | DEBIAN-CVE-2025-37880 | May 9, 2025 |
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