SB20251226206 - NULL pointer dereference in Linux kernel crypto
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226206
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 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2022-50731)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the akcipher_default_op() and crypto_register_akcipher() functions in crypto/akcipher.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/779a9930f3e152c82699feb389a0e6d6644e747e
- https://git.kernel.org/stable/c/85bc736a18b872f54912e8bb70682d11770aece0
- https://git.kernel.org/stable/c/95c4e20adc3ea00d1594a2a05d9b187ed12ffa8e
- https://git.kernel.org/stable/c/a1354bdd191d533211b7cb723aa76a66f516f197
- https://git.kernel.org/stable/c/bc155c6c188c2f0c5749993b1405673d25a80389
- https://git.kernel.org/stable/c/f9058178597059d6307efe96a7916600f8ede08c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.3