8.6
High
CVE-2026-102556 Libsoup: libsoup: heap buffer overflow from websocket pong signal type confusion
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:HExploitable remotely over the network, without an account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 10 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | Versions not published | |
| Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | Versions not published |
Show the 7 other branches Hide the 7 other branches
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service | Versions not published | |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | Versions not published | |
| Red Hat Enterprise Linux 9.6 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 10.0 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | Versions not published |
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