SB2026090985 - Insufficient Entropy in Linux kernel crypto driver
Published: September 9, 2026
Security Bulletin ID
SB2026090985
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Insufficient Entropy (CVE-ID: CVE-2026-80922)
CWE-ID: CWE-331 - Insufficient Entropy
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to distinguish generated output from uniformly random data.
The vulnerability exists due to insufficient entropy in the Qualcomm RNG driver when generating random data. A local user can request random data to distinguish generated output from uniformly random data.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/143c74034a1c47b0a1a64e7ca7153e7739bd1244
- https://git.kernel.org/stable/c/3c7101cfc52e378bcb0a46962145e39c9051dd5d
- https://git.kernel.org/stable/c/4c0018320942003bfedd0a1c4cce3f036d363a7f
- https://git.kernel.org/stable/c/4ef04bdc0c9f98836d1638be516f6bf1bad55f69
- https://git.kernel.org/stable/c/813e6718a199befc4f26f54bdd899fbfa11515e5