Debian: CVE-2024-38544: linux -- security update

Debian: CVE-2024-38544: linux -- security update

Severity

4

CVSS

(AV:L/AC:M/Au:N/C:P/I:P/A:P)

Published

06/19/2024

Created

07/31/2024

Added

07/30/2024

Modified

07/30/2024

Description

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix seg fault in rxe_comp_queue_pkt In rxe_comp_queue_pkt() an incoming response packet skb is enqueued to the resp_pkts queue and then a decision is made whether to run the completer task inline or schedule it. Finally the skb is dereferenced to bump a 'hw' performance counter. This is wrong because if the completer task is already running in a separate thread it may have already processed the skb and freed it which can cause a seg fault.This has been observed infrequently in testing at high scale. This patch fixes this by changing the order of enqueuing the packet until after the counter is accessed.

Solution(s)

• debian-upgrade-linux

References

• https://attackerkb.com/topics/cve-2024-38544
• CVE - 2024-38544