CVE-2026-102560

A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and resulting in a heap buffer overflow.
References
Link Resource
https://access.redhat.com/errata/RHSA-2026:83384 Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:83618 Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-102560 Mitigation Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2543296 Issue Tracking Patch Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

History

16 Oct 2026, 13:56

Type Values Removed Values Added
CPE cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
References () https://access.redhat.com/errata/RHSA-2026:83384 - () https://access.redhat.com/errata/RHSA-2026:83384 - Third Party Advisory
References () https://access.redhat.com/errata/RHSA-2026:83618 - () https://access.redhat.com/errata/RHSA-2026:83618 - Third Party Advisory
References () https://access.redhat.com/security/cve/CVE-2026-102560 - () https://access.redhat.com/security/cve/CVE-2026-102560 - Mitigation, Third Party Advisory
References () https://bugzilla.redhat.com/show_bug.cgi?id=2543296 - () https://bugzilla.redhat.com/show_bug.cgi?id=2543296 - Issue Tracking, Patch, Third Party Advisory
First Time Gnome libsoup
Redhat
Gnome
Redhat enterprise Linux

15 Oct 2026, 17:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:83618 -

15 Oct 2026, 06:17

Type Values Removed Values Added
References
  • () https://access.redhat.com/errata/RHSA-2026:83384 -

29 Sep 2026, 18:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-09-29 18:17

Updated : 2026-10-22 20:17


NVD link : CVE-2026-102560

Mitre link : CVE-2026-102560

CVE.ORG link : CVE-2026-102560


JSON object : View

Products Affected

redhat

  • enterprise_linux

gnome

  • libsoup
CWE
CWE-125

Out-of-bounds Read