High [CVE-2026-97417] use get_unaligned_be32 in tcp_sack
This high-severity Red Hat Linux advisory covers CVE-2026-97417; related products: Red Hat Enterprise Linux 8.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
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Summary
use get_unaligned_be32() in tcp_sack(). Red Hat rates this important (CVSS 7.5).
Weakness: CWE-843. Red Hat lists fixing advisory RHSA-2026:75746 with package kernel-rt-0:4.18.0-553.171.1.rt7.512.el8_10.
Affected product named by the advisory: Red Hat Enterprise Linux 8.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
- kernel-rt-0:4.18.0-553.171.1.rt7.512.el8_10
- RHSA-2026:75746
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
Mitigation checklist
- Systems that do not require stateful firewall, NAT, or connection tracking can eliminate exposure by unloading the nf_conntrack kernel module. On systems where conntrack is required, exposure can be reduced by applying NOTRACK rules in the raw table to bypass connection tracking on untrusted or internet-facing interfaces, ensuring the vulnerable TCP SACK parsing code path in tcp_sack() is not reached for attacker-controlled traffic.
Official advisory · high-confidence parse· fetched 8 days ago·verify at source
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