What is RHSA-2026:9836?

RHSA-2026:9836 is a security advisory published by Red Hat Product Security with Medium severity. Red Hat Security Advisory: kernel security update

Which CVE IDs does RHSA-2026:9836 cover?

RHSA-2026:9836 covers the following CVE IDs: CVE-2026-23001, CVE-2026-23204, CVE-2026-23231. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:9836?

RHSA-2026:9836 has a CVSS v3 base score of 7.8, published by Red Hat Product Security.

RHSA-2026:9836MediumCVSS 7.8

Red Hat Security Advisory: kernel security update

Vendor

Red Hat Product Security

Published

April 22, 2026

Last Modified

July 12, 2026

🔗 CVE IDs covered (3)

CVE-2026-23001 →CVE-2026-23204 →CVE-2026-23231 →

📋 Description

CVE-2026-23001 — kernel: macvlan: fix possible UAF in macvlan_forward_source() CVE-2026-23204 — kernel: net/sched: cls_u32: use skb_header_pointer_careful() CVE-2026-23231 — kernel: kernel: Privilege escalation or denial of service via use-after-free in nf_tables_addchain()

🔗 References (6)

selfhttps://access.redhat.com/errata/RHSA-2026:9836
externalhttps://access.redhat.com/security/updates/classification/#moderate
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2432664
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2439931
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2444376
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_9836.json