CVE-2021-47511 Affecting kernel-livepatch-5_14_21-150500_55_68-default package, versions <1-150500.11.3.1


Severity

Recommended
medium

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (15th percentile)

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  • Snyk IDSNYK-SLES155-KERNELLIVEPATCH514211505005568DEFAULT-7379841
  • published26 Jun 2024
  • disclosed25 Jun 2024

Introduced: 25 Jun 2024

CVE-2021-47511  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 kernel-livepatch-5_14_21-150500_55_68-default to version 1-150500.11.3.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-livepatch-5_14_21-150500_55_68-default package and not the kernel-livepatch-5_14_21-150500_55_68-default package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

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

ALSA: pcm: oss: Fix negative period/buffer sizes

The period size calculation in OSS layer may receive a negative value as an error, but the code there assumes only the positive values and handle them with size_t. Due to that, a too big value may be passed to the lower layers.

This patch changes the code to handle with ssize_t and adds the proper error checks appropriately.

CVSS Scores

version 3.1