NULL pointer dereference in Linux kernel - CVE-2026-53302
Published: June 29, 2026
Vulnerability identifier: #VU135734
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-53302
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to improper algorithm selection in eip93_hmac_setkey() in the EIP93 crypto driver when processing AEAD setkey operations. A local user can trigger a failed setkey operation to cause a denial of service.
A subsequent crypto operation may dereference a NULL pointer in the request context and panic the kernel after the SA record is left partially initialized with zeroed digest fields.
How to mitigate CVE-2026-53302
Install security update from vendor's repository.