VYPR
← All advisories
High severity7.8NVD Advisory· Published May 28, 2026· Updated Jun 11, 2026

CVE-2026-46181

CVE-2026-46181

Description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()

Sashiko points out the radix_tree itself is RCU safe, but nothing ever frees the mlx4_srq struct with RCU, and it isn't even accessed within the RCU critical section. It also will crash if an event is delivered before the srq object is finished initializing.

Use the spinlock since it isn't easy to make RCU work, use refcount_inc_not_zero() to protect against partially initialized objects, and order the refcount_set() to be after the srq is fully initialized.

Affected products

155

Patches

Vulnerability mechanics

References

3

News mentions

0

No linked articles in our index yet.