CVE-2023-53494 Affecting kernel-64kb package, versions <5.14.21-150500.55.124.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.02% (6th percentile)

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  • Snyk IDSNYK-SLES155-KERNEL64KB-13613797
  • published17 Oct 2025
  • disclosed16 Oct 2025

Introduced: 16 Oct 2025

NewCVE-2023-53494  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 kernel-64kb to version 5.14.21-150500.55.124.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-64kb package and not the kernel-64kb 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:

crypto: xts - Handle EBUSY correctly

As it is xts only handles the special return value of EINPROGRESS, which means that in all other cases it will free data related to the request.

However, as the caller of xts may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.

CVSS Base Scores

version 3.1