CVEvulnerability
CVE-2026-102560
9.8 CRITICAL
Official page ↗
- Status
- Analyzed
- Published
- 2026-09-29
- Last modified
- 2026-10-22
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-125
Description
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.
Affected configurations
• gnome libsoup (< 3.7.3)
• redhat enterprise linux 7.0
• redhat enterprise linux 8.0
• redhat enterprise linux 9.0
• redhat enterprise linux 10.0
Related
Weakness · CWE (1)
- CWE-125 Out-of-bounds Read weakness
References
- 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