Insufficient Entropy in Linux kernel - CVE-2026-80922
Published: September 9, 2026
Vulnerability identifier: #VU148748
CSH Severity: Low
CVSS v4: 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]
CVE-ID: CVE-2026-80922
CWE-ID: CWE-331
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
Linux kernel
How to mitigate CVE-2026-80922
Install security update from vendor's repository.
External 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