SB20260625169 - Out-of-bounds write in Linux kernel crypto ccp driver
Published: June 25, 2026
Security Bulletin ID
SB20260625169
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Out-of-bounds write (CVE-ID: CVE-2026-53016)
CWE-ID: CWE-787 - Out-of-bounds write
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to an out-of-bounds write in ccp_aes_complete() when processing AF_ALG rfc3686-ctr-aes-ccp requests. A local user can supply a request with an 8-byte IV to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/227c1e1d9e2aa4cfc65ba446d5690da1f546cda4
- https://git.kernel.org/stable/c/798d409a8949f3f495f238549b86de2886b129bd
- https://git.kernel.org/stable/c/939061b2d0f7f15114e34b4ce878ef50ff4089c3
- https://git.kernel.org/stable/c/a7a1f3cdd64d8a165d9b8c9e9ad7fb46ac19dfc4
- https://git.kernel.org/stable/c/bb01d8f1f385bc9034ca114d3508c7fdea24fc9a
- https://git.kernel.org/stable/c/df9784bb5b637ac80f4a2768a58ca9a50bef28a9
- https://git.kernel.org/stable/c/dfb2cf434829819268fe50f41542aad318ad62b2
- https://git.kernel.org/stable/c/eecee15e263ccb8cd77170a56ab6c969cb54dd6a