Release of invalid pointer or reference in GnuTLS - CVE-2026-1584
Published: February 10, 2026
Vulnerability identifier: #VU122490
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-1584
CWE-ID: CWE-763
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to invalid pointer access in TLS 1.3 implementation. A remote attacker can send an invalid PSK binder value in ClientHello message and perform a denial of service attack.
Affected software
GnuTLS
LANTIME Operating System Firmware (LTOS)
Fedora
gnutls
LANTIME Operating System Firmware (LTOS)
Fedora
gnutls
How to mitigate CVE-2026-1584
Install updates from vendor's website.
GnuTLS - update to 3.8.12
LANTIME Operating System Firmware (LTOS) - update to 7.10.009
gnutls - addressed in versions 3.8.11-3.fc42, 3.8.12-1.fc43
LANTIME Operating System Firmware (LTOS) - update to 7.10.009
gnutls - addressed in versions 3.8.11-3.fc42, 3.8.12-1.fc43