CVE-2025-21897 — Improper Locking in Linux
Severity
5.5MEDIUMNVD
EPSS
0.0%
top 88.81%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedApr 1
Description
In the Linux kernel, the following vulnerability has been resolved:
sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without balance()
a6250aa251ea ("sched_ext: Handle cases where pick_task_scx() is called
without preceding balance_scx()") added a workaround to handle the cases
where pick_task_scx() is called without prececing balance_scx() which is due
to a fair class bug where pick_taks_fair() may return NULL after a true
return from balance_fair().
The workaround de…
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 Packages4 packages
▶CVEListV5linux/linuxa6250aa251eacaf3ebfcfe152a96a727fd483ecd — 5324c459f90d16b0c43a78b494c598915d782b7a+3
Patches
🔴Vulnerability Details
2GHSA▶
GHSA-32g6-m5fv-fhv6: In the Linux kernel, the following vulnerability has been resolved:
sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without↗2025-04-01
OSV▶
CVE-2025-21897: In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix pick_task_scx() picking non-queued tasks when it's called without b↗2025-04-01