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.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2026-102560 ↗
- access.redhat.com/errata/RHSA-2026:83384 ↗
- access.redhat.com/errata/RHSA-2026:83618 ↗
- access.redhat.com/errata/RHSA-2026:93445 ↗
- access.redhat.com/errata/RHSA-2026:93446 ↗
- access.redhat.com/errata/RHSA-2026:93447 ↗
- access.redhat.com/errata/RHSA-2026:93583 ↗
- access.redhat.com/security/cve/CVE-2026-102560 ↗
- bugzilla.redhat.com/show_bug.cgi ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.