Out-of-bounds Read Affecting libsoup-devel package, versions <0:2.72.0-16.el9_8.8


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.4% (34th percentile)

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  • Snyk IDSNYK-RHEL9-LIBSOUPDEVEL-20970433
  • published15 Oct 2026
  • disclosed3 Sept 2026

Introduced: 3 Sep 2026

CVE-2026-102559  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade RHEL:9 libsoup-devel to version 0:2.72.0-16.el9_8.8 or higher.
This issue was patched in RHSA-2026:83384.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libsoup-devel package and not the libsoup-devel package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1