SB20260812203 - NULL pointer dereference in Linux kernel rds
Published: August 12, 2026
Security Bulletin ID
SB20260812203
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) NULL pointer dereference (CVE-ID: CVE-2026-68322)
CWE-ID: CWE-476 - NULL Pointer Dereference
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.
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