CVE-2024-38544 Affecting kernel-64k-modules-core package, versions <0:5.14.0-427.33.1.el9_4


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-ALMALINUX9-KERNEL64KMODULESCORE-8333956
  • published4 Nov 2024
  • disclosed28 Aug 2024

Introduced: 28 Aug 2024

CVE-2024-38544  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 kernel-64k-modules-core to version 0:5.14.0-427.33.1.el9_4 or higher.
This issue was patched in ALSA-2024:5928.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64k-modules-core package and not the kernel-64k-modules-core package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

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.

CVSS Scores

version 3.1