7.5 High

CVE-2026-59692 Gstreamer1-plugins-bad-free: gstreamer: dtls certificate subject dn stack buffer overflow in openssl_verify_callback

Description

A stack buffer overflow vulnerability was found in GStreamer's DTLS plugin. During a DTLS handshake, the peer certificate Subject Distinguished Name is printed into a fixed-size 2048-byte stack buffer without bounds checking. A remote unauthenticated attacker can send a certificate with an oversized Subject DN that exceeds the buffer, causing a stack buffer overflow and process crash, resulting in denial of service.

CVSS 3.1 detail

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitable 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: None
Integrity: None
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 9.4 Update Services for SAP Solutions	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

Show the 7 other branches

Product	Affected versions	Fixed in
Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On	Versions not published
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 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 9.2 Update Services for SAP Solutions	Versions not published

References

RHSA-2026:47179 access.redhat.com
RHSA-2026:47180 access.redhat.com
RHSA-2026:47731 access.redhat.com
RHSA-2026:54658 access.redhat.com
RHSA-2026:54659 access.redhat.com
RHSA-2026:54660 access.redhat.com
RHSA-2026:54664 access.redhat.com
RHSA-2026:54665 access.redhat.com
RHSA-2026:54752 access.redhat.com
RHSA-2026:56658 access.redhat.com
RHSA-2026:56772 access.redhat.com
access.redhat.com access.redhat.com
RHBZ#2497344 bugzilla.redhat.com
gitlab.freedesktop.org gitlab.freedesktop.org
gitlab.freedesktop.org gitlab.freedesktop.org

Timeline

Published July 9, 2026
Last modified November 4, 2026

The 1454 CVEs of Red Hat Enterprise Linux 10 →

CVE-2026-123151 Gdb: gdb: stack buffer overflow in parse_tsv_definition via stale rs->buf tail Not rated CVE-2026-121997 Gdb: gdbserver: heap buffer overflow in cmd_qtdpsrc via qtdpsrc declared/actual length mismatch 8.1 High CVE-2026-121996 Gdb: gdbserver: heap disclosure and wild pointer in gdb_parse_agent_expr via untrusted agent-expression length 8.2 High CVE-2026-121995 Gdb: gdb: stack buffer overflow in parse_tracepoint_definition via stale rs->buf tail 7.5 High

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