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LinuxVULNRICHMENT:CVE-2024-43872

HistoryAug 21, 2024 - 12:06 a.m.

CVE-2024-43872 RDMA/hns: Fix soft lockup under heavy CEQE load

2024-08-2100:06:24

Linux

github.com

linux kernel

cve-2024-43872

rdma/hns

soft lockup

ceqe

interrupt handler

bh workqueue

work handler

vulnerability fix

AI Score

6.8

Confidence

Low

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

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

RDMA/hns: Fix soft lockup under heavy CEQE load

CEQEs are handled in interrupt handler currently. This may cause the
CPU core staying in interrupt context too long and lead to soft lockup
under heavy load.

Handle CEQEs in BH workqueue and set an upper limit for the number of
CEQE handled by a single call of work handler.

References

git.kernel.org/stable/c/06580b33c183c9f98e2a2ca96a86137179032c08

git.kernel.org/stable/c/2fdf34038369c0a27811e7b4680662a14ada1d6b