CVE-2026-93159
kernel: crypto: atmel-sha204a - fix heap info leak on I2C transfer failure
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · September 30, 2026
Description
A flaw was found in the atmel-sha204a cryptographic hardware random number generator (HWRNG) driver in the Linux kernel. When an Inter-Integrated Circuit (I2C) transfer fails, the driver does not properly clear a pointer to allocated work data. This oversight can lead to subsequent read attempts observing stale data, potentially resulting in an information leak where sensitive heap memory contents could be exposed.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-459 · Incomplete Cleanup