PT-2025-49090 · Linux+2 · Linux Kernel+2
Published
2025-11-19
·
Updated
2026-04-06
·
CVE-2025-40260
CVSS v2.0
4.3
Medium
| Vector | AV:A/AC:H/Au:S/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A crash could occur in the
scx enable() function when a helper kthread creation failed. This was observed during termination of the sched ext selftests runner with Ctrl+ while test 15 was running. The issue stemmed from kthread run worker() returning an error pointer on failure, which was not handled correctly in scx alloc and add sched(). This resulted in scx enable() dereferencing an error pointer. The fix involves propagating the error code in scx alloc and add sched() to the error path in scx enable(), preventing the dereference. The vulnerable function is scx enable().Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu