SB2026091850 - Incomplete cleanup in Linux kernel crypto driver
Published: September 18, 2026
Security Bulletin ID
SB2026091850
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) Incomplete cleanup (CVE-ID: CVE-2026-93159)
CWE-ID: CWE-459 - Incomplete cleanup
CVSSv4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to incomplete cleanup in the atmel-sha204a nonblocking RNG path when an asynchronous I2C transfer fails. A local user can make subsequent read attempts after a failed I2C transfer to disclose sensitive information.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0d6db386133d9230befb77967bbf130443964860
- https://git.kernel.org/stable/c/28cc179252347718f97045dd5ea74165609dbd7d
- https://git.kernel.org/stable/c/4e76d85e505b7451925efbcd67c015e8c2440c68
- https://git.kernel.org/stable/c/72bbf11ba14bd7d5fbf31a1ec42fff608b657f74
- https://git.kernel.org/stable/c/94abda77b57a35b82bba0365bad072d94d67ffe9
- https://git.kernel.org/stable/c/a430b5b6d2ddd2b266330f8507a655be1148347d
- https://git.kernel.org/stable/c/bcac9052e19490231ff6e0678a06bd2fcf8db3af
- https://git.kernel.org/stable/c/f4d347fb1309b69ea6f817a17e6b2893c8d754b7