Vulnerability in Red Hat Enterprise Linux 10

[ Description ]Official description

A flaw was found in libsoup. When handling an incoming WebSocket Pong frame, SoupWebsocketConnection emitted the ::pong signal with a GByteArray pointer even though the signal is declared to pass a GBytes. Applications connecting a handler that follows the documented GBytes API can trigger heap corruption or a crash upon receiving a crafted Pong.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund14 Oct 2026WID-SEC-2026-3952

  Red Hat Enterprise Linux (libsoup): Multiple vulnerabilities Translated from German

  Risk highCVE-2026-102558CVE-2026-102557CVE-2026-102560+2 more CVEs

[ References ]References

• access.redhat.com/errata/RHSA-2026:83384Vendor Advisory
• access.redhat.com/errata/RHSA-2026:83618
• access.redhat.com/errata/RHSA-2026:84586
• access.redhat.com/security/cve/CVE-2026-102556MitigationVendor Advisory
• bugzilla.redhat.com/show_bug.cgiIssue TrackingVendor Advisory