Medium [CVE-2026-68477] fix more places with wrong ipv6 transport offsets
This medium-severity Red Hat Linux advisory covers CVE-2026-68477 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
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Summary
A flaw was found in the Linux kernel's IP Virtual Server (IPVS) component. This vulnerability arises from incorrect IPv6 transport offsets, where TCP application code might incorrectly assume an IPv4 network header when processing IPv6 packets.
Additionally, the ICMPv6 header offset in ip_vs_out_icmp_v6() could be incorrect when IPv6 packets contain extension headers. These issues can lead to problems with applications over IPv6 and affect checksum calculations, potentially causing packet processing errors.
Red Hat severity: Moderate — CVSS 5.5 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-354.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Will not fix / out of support: Red Hat Enterprise Linux 6.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: 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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