NULL pointer dereference in Linux kernel - CVE-2026-68322
Published: August 12, 2026
Vulnerability identifier: #VU141727
CSH Severity: Low
CVSS v4: 6.8 [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]
CVE-ID: CVE-2026-68322
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in the RDS IPv6 address check logic when binding an RDS socket to an IPv6 address while IPv6 is disabled. A local user can bind an RDS socket to an IPv6 address to cause a denial of service.
The issue occurs on systems booted with the ipv6.disable=1 parameter.
Affected software
Linux kernel
Debian Linux
linux (Debian package)
Debian Linux
linux (Debian package)
How to mitigate CVE-2026-68322
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3
linux (Debian package) - update to 6.12.105-1
linux (Debian package) - update to 6.12.105-1
External References
- https://git.kernel.org/stable/c/00d5707217b5972554898ff734ae7b71bce704e6
- https://git.kernel.org/stable/c/8e48d7ab1e01936a172ff31531904b003895fd8c
- https://git.kernel.org/stable/c/9c805e592a29be9e4e61ff1bd567da04aa8fd6f9
- https://git.kernel.org/stable/c/a8302e758050e6a922765aee8d220a4fd350f52d
- https://git.kernel.org/stable/c/f6787fdffcae5490c779f0f3f33b11597525d1ae