CVE-2026-118593
MEDIUMDescription
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(), where the drop path returns 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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 10% of all known CVEs.
References
Related Vulnerabilities
Other CWE-667 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2019-10072 | High | 7.5 | 73% | - | Fix |
| CVE-2002-1850 | High | 7.5 | 17% | - | Fix |
| CVE-2009-2699 | High | 7.5 | 14% | - | Fix |
| CVE-2004-0174 | High | 7.5 | 12% | - | - |
| CVE-2009-4272 | High | 7.5 | 11% | - | - |
| CVE-2020-24606 | High | 8.6 | 5.0% | - | Fix |
Common questions
How do I fix CVE-2026-118593?
No published fix for CVE-2026-118593 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-118593 being actively exploited?
Not that we know of. CVE-2026-118593 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.20% is the estimated probability that it will be exploited in the next 30 days. That is higher than 10% of all scored CVEs.
How severe is CVE-2026-118593?
CVE-2026-118593 has a CVSS v3 base score of 5.9, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-10-30.