CVE-2024-35958 Affecting kernel-debug package, versions <0:5.14.0-427.26.1.el9_4


Severity

Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-ORACLE9-KERNELDEBUG-7546111
  • published20 Jul 2024
  • disclosed20 May 2024

Introduced: 20 May 2024

CVE-2024-35958  (opens in a new tab)

How to fix?

Upgrade Oracle:9 kernel-debug to version 0:5.14.0-427.26.1.el9_4 or higher.
This issue was patched in ELSA-2024-4583.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debug package and not the kernel-debug 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:

net: ena: Fix incorrect descriptor free behavior

ENA has two types of TX queues:

  • queues which only process TX packets arriving from the network stack
  • queues which only process TX packets forwarded to it by XDP_REDIRECT or XDP_TX instructions

The ena_free_tx_bufs() cycles through all descriptors in a TX queue and unmaps + frees every descriptor that hasn't been acknowledged yet by the device (uncompleted TX transactions). The function assumes that the processed TX queue is necessarily from the first category listed above and ends up using napi_consume_skb() for descriptors belonging to an XDP specific queue.

This patch solves a bug in which, in case of a VF reset, the descriptors aren't freed correctly, leading to crashes.

CVSS Scores

version 3.1