CVE-2024-38544 Affecting perf package, versions <0:5.14.0-427.33.1.el9_4


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-ORACLE9-PERF-7852576
  • published30 Aug 2024
  • disclosed19 Jun 2024

Introduced: 19 Jun 2024

CVE-2024-38544  (opens in a new tab)

How to fix?

Upgrade Oracle:9 perf to version 0:5.14.0-427.33.1.el9_4 or higher.
This issue was patched in ELSA-2024-5928.

NVD Description

Note: Versions mentioned in the description apply only to the upstream perf package and not the perf package as distributed by Oracle. See How to fix? for Oracle: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