Vulnerability in Red Hat Enterprise Linux 10

[ Description ]Official description

A flaw was found in libsoup. When reassembling fragmented WebSocket messages into a GByteArray, libsoup did not adequately cap total message size against the limits of the underlying buffer type. A remote peer could send fragments that caused size truncation while the implementation still used the full length, leading to heap corruption or a crash.

[ 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-2026-102557MitigationVendor Advisory
• bugzilla.redhat.com/show_bug.cgiIssue TrackingVendor Advisory