CERT24CVE-2026-118593 — Kernel local_bh imbalance in the seg6_input_core() drop pathLoading data…
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CVE-2026-118593 — Kernel local_bh imbalance in the seg6_input_core() drop path

A flaw was found in Red Hat Enterprise Linux 9 kernel builds. An incomplete backport of the CVE-2026-46099 fix in RHEL 9.6 through 9.10 left a local_bh imbalance in seg6_input_core(), causing the drop path to return with bottom halves still disabled. This can lead to softirq starvation and denial of service on systems with SRv6 tunnels configured. Upstream and RHEL 10 are not affected.

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CVE-2026-118593 — Kernel local_bh imbalance in the seg6_input_core() drop path

A flaw was found in Red Hat Enterprise Linux 9 kernel builds. An incomplete backport of the CVE-2026-46099 fix in RHEL 9.6 through 9.10 left a local_bh imbalance in seg6_input_core(), causing the drop path to return with bottom halves still disabled. This can lead to softirq starvation and denial of service on systems with SRv6 tunnels configured. Upstream and RHEL 10 are not affected.