CVE-2025-32053: Libsoup: heap buffer overflows in sniff_feed_or_html() and skip_insignificant_space()

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-03 · updated 2026-06-30
Weakness: CWE-126

Description

A flaw was found in libsoup. A vulnerability in sniff_feed_or_html() and skip_insignificant_space() functions may lead to a heap buffer over-read.

Affected products

Red Hat Enterprise Linux 8: all versions — fixed in 0:2.62.3-8.el8_10, 0:2.8-3.el8_10.1, 0:8.10-1
Red Hat Enterprise Linux 8.8 Extended Update Support: all versions — fixed in 0:2.62.3-3.el8_8.4
Red Hat Enterprise Linux 9: all versions — fixed in 0:2.72.0-10.el9_6.1
Red Hat Enterprise Linux 9.2 Extended Update Support: all versions — fixed in 0:2.72.0-8.el9_2.4
Red Hat Enterprise Linux 9.4 Extended Update Support: all versions — fixed in 0:2.72.0-8.el9_4.4

How to fix

Upgrade to a fixed version: Red Hat Enterprise Linux 8 0:2.62.3-8.el8_10, 0:2.8-3.el8_10.1, 0:8.10-1; Red Hat Enterprise Linux 8.8 Extended Update Support 0:2.62.3-3.el8_8.4; Red Hat Enterprise Linux 9 0:2.72.0-10.el9_6.1; Red Hat Enterprise Linux 9.2 Extended Update Support 0:2.72.0-8.el9_2.4; Red Hat Enterprise Linux 9.4 Extended Update Support 0:2.72.0-8.el9_4.4. Check the vendor advisory for mitigations.

References

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