Medium [CVE-2026-68322] Linux kernel (RDS): Denial of Service via null pointer dereference when IPv6 is disabled
This medium-severity Red Hat Linux advisory covers CVE-2026-68322 affecting Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4, Red Hat package: kernel-rt.
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Summary
In the Linux kernel, the following vulnerability has been resolved: rds: Fix inet6_addr_lst NULL dereference when IPv6 is disabled When booting with the 'ipv6.disable=1' parameter, inet6_addr_lst is never initialized because inet6_init() exits before addrconf_init() is called to initialize it.
Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat OpenShift Container Platform 4; Red Hat package: kernel-rt.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
Mitigation
The source record does not include mitigation steps. That is not a statement that no fix exists — read the vendor advisory below for the authoritative guidance.
Official advisory · medium-confidence parse· fetched 2 hours ago·verify at source
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