Libsoup: libsoup: heap buffer overflow during websocket client-frame masking (Red Hat Red Hat Enterprise Linux 10)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.40 % · percentile 35 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Modified
Description
A flaw was found in libsoup. When constructing a masked WebSocket client frame for a very large outgoing payload, size values passed to GByteArray allocation APIs could be truncated while the masking routine still used the full length, causing a heap buffer overflow.
Weaknesses (CWE)
- CWE-125 — Out-of-bounds Read
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | redhat |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-89104
- GCVE · GCVE-0-2026-102559
Affected configurations (NVD CPE)
cpe:2.3:a:gnome:libsoup:*:*:*:*:*:*:*:*< 3.7.3cpe: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:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Red Hat · Red Hat Enterprise Linux 10 | unaffected 0:3.6.5-3.el10_2.20 < * |
| Red Hat · Red Hat Enterprise Linux 8 | unaffected 0:2.62.3-19.el8_10 < * |
| Red Hat · Red Hat Enterprise Linux 8 | unaffected 0:2.62.3-19.el8_10 < * |
| Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | unaffected 0:2.62.3-2.el8_4.14 < * |
| Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | unaffected 0:2.62.3-2.el8_4.14 < * |
| Red Hat · Red Hat Enterprise Linux 9 | unaffected 0:2.72.0-16.el9_8.8 < * |
| Red Hat · Red Hat Enterprise Linux 6 | |
| Red Hat · Red Hat Enterprise Linux 7 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |