CVE-2026-118593

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.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-118593
https://bugzilla.redhat.com/show_bug.cgi?id=2563095

Configurations

No configuration.

History

30 Oct 2026, 07:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-30 07:16

Updated : 2026-10-30 07:16

NVD link : CVE-2026-118593

Mitre link : CVE-2026-118593

CVE.ORG link : CVE-2026-118593

JSON object : View

Products Affected

No product.

CWE

CWE-667

Improper Locking

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