LinuxVULNRICHMENT:CVE-2024-38545

HistoryJun 19, 2024 - 1:35 p.m.

CVE-2024-38545 RDMA/hns: Fix UAF for cq async event

2024-06-1913:35:19

Linux

github.com

linux kernel

vulnerability

rdma

hns

fix

uaf

async event

refcount

locks

concurrent

xa_lock

AI Score

6.9

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

RDMA/hns: Fix UAF for cq async event

The refcount of CQ is not protected by locks. When CQ asynchronous
events and CQ destruction are concurrent, CQ may have been released,
which will cause UAF.

Use the xa_lock() to protect the CQ refcount.

References

git.kernel.org/stable/c/37a7559dc1358a8d300437e99ed8ecdab0671507

git.kernel.org/stable/c/39d26cf46306bdc7ae809ecfdbfeff5aa1098911

git.kernel.org/stable/c/63da190eeb5c9d849b71f457b15b308c94cbaf08

git.kernel.org/stable/c/763780ef0336a973e933e40e919339381732dcaf

git.kernel.org/stable/c/a942ec2745ca864cd8512142100e4027dc306a42