CVE-2026-31693: cifs: some missing initializations on replay

Published Apr 30, 2026
·
Updated

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

cifs: some missing initializations on replay

In several places in the code, we have a label to signify the start of the code where a request can be replayed if necessary. However, some of these places were missing the necessary reinitializations of certain local variables before replay.

This change makes sure that these variables get initialized after the label.

Affected Software

12 affected components
Linux Linux kernel
Linux Linux kernel>=6.6.32<6.6.128
Linux Linux kernel>=6.8.1<6.12.75
Linux Linux kernel>=6.13<6.18.16
Linux Linux kernel>=6.19<6.19.6
Linux Linux kernel=6.8
Linux Linux kernel=6.8-rc2
Linux Linux kernel=6.8-rc3
Linux Linux kernel=6.8-rc4
Linux Linux kernel=6.8-rc5
Linux Linux kernel=6.8-rc6
Linux Linux kernel=6.8-rc7

Event History

Apr 30, 2026
CVE Published
via MITRE·11:47 AM
Data Sourced
via MITRE·11:47 AM
DescriptionSeverity
Data Sourced
via NVD·12:16 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2026-31693?

CVE-2026-31693 is classified as a medium severity vulnerability in the Linux kernel.

2

How do I fix CVE-2026-31693?

To fix CVE-2026-31693, update your Linux kernel to the latest version provided by the Linux distribution maintainers.

3

What systems are affected by CVE-2026-31693?

CVE-2026-31693 affects various versions of the Linux kernel that implement CIFS functionality.

4

What is the impact of CVE-2026-31693?

The impact of CVE-2026-31693 includes potential unauthorized access due to missing initializations on replay in CIFS.

5

Is CVE-2026-31693 a remote code execution vulnerability?

No, CVE-2026-31693 is not specifically a remote code execution vulnerability, but it may lead to security issues if exploited.

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