SB20260502127 - Improper validation of integrity check value in Linux kernel crypto
Published: May 2, 2026
Security Bulletin ID
SB20260502127
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper validation of integrity check value (CVE-ID: CVE-2026-31719)
CWE-ID: CWE-354 - Improper Validation of Integrity Check Value
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to bypass integrity verification.
The vulnerability exists due to improper integrity check handling in krb5enc_dispatch_decrypt() when processing asynchronous decrypt operations. A local user can trigger asynchronous decryption completion to bypass integrity verification.
Remediation
Install update from vendor's website.