Dashboard / CVE-2026-118593

CVE-2026-118593

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 62/100
Published: 2026-10-30 Modified: 2026-11-01 First seen: 2026-10-30 Status: active

Attack Surface

Network No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: High
PR: None
UI: None
S: Unchanged
C: None
I: None
A: High

Description

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.

Weakness Classification (1)

References & Advisories (2)

https://bugzilla.redhat.com/show_bug.cgi?id=2563095
issue-tracking x_refsource_REDHAT

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ No user interaction

CVSS Score

5.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS — Exploitation Probability

0.20%
Raw Score 0.001990
Percentile 9.8%
Date 2026-11-02

EPSS Trend

2026-11-02
0.00199
2026-11-01
0.00199
2026-10-31
0.00199
2026-10-30
0.00199

Intelligence Sources

mitre ref →
nvd ref →

External Links