CVE-2025-40250 — Improper Update of Reference Count in Linux
Severity
7.2HIGHOSV
OSV3.2
No vectorEPSS
0.0%
top 89.95%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedDec 4
Latest updateApr 9
Description
In the Linux kernel, the following vulnerability has been resolved:
net/mlx5: Clean up only new IRQ glue on request_irq() failure
The mlx5_irq_alloc() function can inadvertently free the entire rmap
and end up in a crash[1] when the other threads tries to access this,
when request_irq() fails due to exhausted IRQ vectors. This commit
modifies the cleanup to remove only the specific IRQ mapping that was
just added.
This prevents removal of other valid mappings and ensures precise
cleanup of th…