SB20260325149 - NULL Pointer Dereference in Linux kernel ipv6
Published: March 25, 2026
Security Bulletin ID
SB20260325149
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote 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-2026-23304)
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in the ipv6 routing subsystem when processing IPv6 packets. A remote attacker can send a specially crafted IPv6 packet to trigger a null pointer dereference in ip6_rt_get_dev_rcu(), leading to a system crash.
Exploitation does not require authentication or user interaction and occurs within the network stack during packet processing.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0b5a7826020706057cc5a9d9009e667027f221ee
- https://git.kernel.org/stable/c/2ffb4f5c2ccb2fa1c049dd11899aee7967deef5a
- https://git.kernel.org/stable/c/3310fc11fc47387d1dd4759b0bc961643ea11c7f
- https://git.kernel.org/stable/c/4a48fe59f29f673a3d042d679f26629a9c3e29d4
- https://git.kernel.org/stable/c/581800298313c9fd75e94985e6d37d21b7e35d34
- https://git.kernel.org/stable/c/ae88c8256547b63980770a9ea7be73a15900d27e