Skip to content
VulniPulse
Sign in
High8.2Vendor: MediumRed Hat Linux

High [CVE-2026-35091] Denial of Service and information disclosure via crafted UDP packet

This high-severity Red Hat Linux advisory covers CVE-2026-35091 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support.

CVE-2026-35091 Published Apr 1, 2026
CVE-2026-35091
Affected products & platforms
Red Hat LinuxUnclassified
Open vendor advisory

Android app · Google Play

Monitor future Red Hat Linux CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery
Get CVE alertsSee app features

Summary

Denial of Service and information disclosure via crafted UDP packet. Red Hat rates this moderate (CVSS 8.2).

Weakness: CWE-253. Affected package(s): corosync.

Resolved in Red Hat advisory RHSA-2026:19043 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.

Affected versions
  • corosync-0:3.1.9-1.el10_0.2
  • corosync-0:3.1.5-2.el8_6.1
  • corosync-0:3.1.5-3.el9_0.1
  • corosync-0:3.1.7-1.el9_2.1
  • corosync-0:3.1.9-2.el10_1.1
  • corosync-0:3.1.8-1.el9_4.1
  • corosync-0:2.4.5-7.el7_9.3
  • corosync-0:3.1.10-1.el9_8.1
  • corosync-0:3.1.8-1.el8_10.1
  • corosync-0:3.1.0-3.el8_4.2
  • corosync-0:3.1.7-1.el8_8.1
  • corosync-0:3.1.10-1.el10_2.1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • RHSA-2026:19043

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:19043 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.

Sign in to join the discussion.