Quick answers
- Is CVE-2026-118593 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-118593 being exploited in the wild.
- How severe is CVE-2026-118593?
- Medium severity, with a CVSS score of 5.9, published 30 October 2026.
- Which products and versions are affected?
- Red Hat Enterprise Linux 9.6 through 9.10.
- Is there a fix for CVE-2026-118593?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-118593 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-118593?
- Check whether you run Red Hat Enterprise Linux at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An incomplete backport of CVE-2026-46099 in RHEL 9.6–9.10 leaves a local_bh (bottom-half) imbalance in seg6_input_core(), where the drop path returns with bottom halves still disabled. This causes softirq starvation leading to denial of service on systems with SRv6 tunnels. The vulnerability requires SRv6 tunnels to be configured on the system to be exploitable.
Affected products
- Red Hat Enterprise Linux 9.6 through 9.10
Timeline
- 2026-10-30: disclosed