CVE-2026-31693

cifs: some missing initializations on replay

HIGH
7.8
CVSS Score
Published: April 30, 2026 at 11:47 AM UTC
Updated: October 19, 2026 at 07:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.13 ≤ v < 6.18.166.19 ≤ v < 6.19.66.6.32 ≤ v < 6.6.1286.8.1 ≤ v < 6.12.75433042a91f9373241307725b52de573933ffedbf4f1fffa2376922f3d1d506e49c0fd445b023a28e6.6.326.86.8 rc26.8 rc36.8 rc46.8 rc56.8 rc66.8 rc7
Vendor states this is fixed in 14f66f44646333d2bfd7ece36585874fd72f8286 (fixed)
Vendor states this is fixed in 1d731e512134495e0ef490ade0e4d91dc0d515ec (fixed)
Vendor states this is fixed in 7c9ce68192eef14c777cb6ce17155d2eb2431aea (fixed)
Vendor states this is fixed in c854ab481ece4b3e5f4c2e8b22824f015ff874a5 (fixed)
Vendor states this is fixed in c99e160938b627f6f28edee930e8abc157e84386 (fixed)
Vendor states this is fixed in 6.12.75 (unaffected)
Vendor states this is fixed in 6.18.16 (unaffected)
Vendor states this is fixed in 6.19.6 (unaffected)
Vendor states this is fixed in 6.6.128 (unaffected)
Vendor states this is fixed in 6.8 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-908CWE-665

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