SB20260527106 - Improper synchronization in Linux kernel crypto driver
Published: May 27, 2026
Security Bulletin ID
SB20260527106
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) Improper synchronization (CVE-ID: CVE-2026-46077)
CWE-ID: CWE-662 - Improper Synchronization
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to disclose sensitive information.
The vulnerability exists due to improper synchronization in atmel-tdes DMA output handling when processing cryptographic operations. A local user can trigger DMA output processing to disclose sensitive information.
This can result in stale cache data being returned on non-coherent platforms.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/12a0adfe498cd5d87e6365d7ca5f6b3eed79e523
- https://git.kernel.org/stable/c/5281e6e2302362f6b75b70cbfe4098d2a25dafd9
- https://git.kernel.org/stable/c/863d11b3927703ad95077c81a8a6489c5c7872f7
- https://git.kernel.org/stable/c/b5f5df801d161ba244f391519cbff2f4e5c6edc2
- https://git.kernel.org/stable/c/c8a9a647532f5c2a04180352693215e24e9dba03