SB2026043084 - Improper Initialization in Linux kernel smb client
Published: April 30, 2026
Security Bulletin ID
SB2026043084
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Initialization (CVE-ID: CVE-2026-31693)
CWE-ID: CWE-665 - Improper Initialization
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper initialization in cifs replay handling when replaying requests. A local user can trigger request replay to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/14f66f44646333d2bfd7ece36585874fd72f8286
- https://git.kernel.org/stable/c/1d731e512134495e0ef490ade0e4d91dc0d515ec
- https://git.kernel.org/stable/c/7c9ce68192eef14c777cb6ce17155d2eb2431aea
- https://git.kernel.org/stable/c/c854ab481ece4b3e5f4c2e8b22824f015ff874a5
- https://git.kernel.org/stable/c/c99e160938b627f6f28edee930e8abc157e84386