NULL pointer dereference in Wireshark - CVE-2026-3202

Vulnerability identifier: #VU123277

CSH Severity: Medium

CVSS v4: 5.6 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-3202

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the NTS-KE protocol dissector. A remote attacker can trick a victim to open a specially crafted packet trace file and perform a denial of service (DoS) attack.

Wireshark
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
Basesystem Module
Desktop Applications Module
Server Applications Module
Fedora
wireshark
wireshark-ui-qt
wireshark-devel
wireshark-ui-qt-debuginfo
libwsutil17
libwireshark19-debuginfo
wireshark-debuginfo
libwiretap16
libwiretap16-debuginfo
wireshark-debugsource
libwsutil17-debuginfo
libwireshark19
libvirt-daemon-driver-storage-disk
libvirt-daemon-driver-storage-iscsi-debuginfo
libvirt-daemon-common
libvirt-daemon-driver-interface
libvirt-daemon-qemu
libvirt-daemon-driver-storage-iscsi
libvirt-daemon-driver-storage-scsi-debuginfo
libvirt-client-qemu
libvirt-daemon-driver-storage-logical-debuginfo
libvirt-daemon-driver-nodedev-debuginfo
libvirt-daemon-plugin-sanlock-debuginfo
libvirt-daemon-plugin-lockd-debuginfo
libvirt-daemon-config-network
libvirt-daemon-driver-interface-debuginfo
libvirt-daemon-driver-libxl
libvirt-daemon-proxy-debuginfo
libvirt-daemon-driver-network
libvirt-daemon-hooks
libvirt-daemon-log
libvirt-daemon-driver-storage
libvirt-daemon-common-debuginfo
libvirt-daemon-driver-qemu-debuginfo
libvirt-client-debuginfo
libvirt-daemon-plugin-sanlock
libvirt-daemon
libvirt-daemon-driver-storage-rbd
libvirt-daemon-driver-storage-rbd-debuginfo
libvirt-doc
libvirt-daemon-xen
libvirt-daemon-driver-libxl-debuginfo
libvirt-daemon-driver-storage-iscsi-direct
libvirt-libs-debuginfo
libvirt-libs
libvirt-debugsource
libvirt-daemon-driver-storage-core
libvirt-daemon-config-nwfilter
libvirt-daemon-driver-nwfilter-debuginfo
libvirt-daemon-proxy
libvirt-daemon-lock-debuginfo
libvirt-daemon-driver-storage-mpath
libvirt-nss
libvirt-client
libvirt
libvirt-daemon-driver-secret-debuginfo
libvirt-daemon-driver-storage-core-debuginfo
libvirt-daemon-lock
libvirt-daemon-driver-network-debuginfo
libvirt-daemon-debuginfo
libvirt-daemon-driver-nodedev
libvirt-daemon-driver-secret
libvirt-nss-debuginfo
libvirt-daemon-driver-qemu
libvirt-daemon-driver-storage-disk-debuginfo
libvirt-daemon-driver-storage-iscsi-direct-debuginfo
libvirt-daemon-plugin-lockd
libvirt-daemon-log-debuginfo
libvirt-daemon-driver-storage-logical
libvirt-daemon-driver-nwfilter
libvirt-daemon-driver-storage-scsi
libvirt-daemon-driver-storage-mpath-debuginfo
libvirt-devel

Install updates from vendor's website.

Wireshark - update to 4.6.4
wireshark - addressed in versions 4.6.4-1.fc44, 4.6.4-2.fc44
wireshark-ui-qt - update to 4.6.4-150700.21.8.1
wireshark-devel - update to 4.6.4-150700.21.8.1
wireshark-ui-qt-debuginfo - update to 4.6.4-150700.21.8.1
libwsutil17 - update to 4.6.4-150700.21.8.1
libwireshark19-debuginfo - update to 4.6.4-150700.21.8.1
wireshark-debuginfo - update to 4.6.4-150700.21.8.1
libwiretap16 - update to 4.6.4-150700.21.8.1
wireshark - update to 4.6.4-150700.21.8.1
libwiretap16-debuginfo - update to 4.6.4-150700.21.8.1
wireshark-debugsource - update to 4.6.4-150700.21.8.1
libwsutil17-debuginfo - update to 4.6.4-150700.21.8.1
libwireshark19 - update to 4.6.4-150700.21.8.1
libvirt-daemon-driver-storage-disk - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-iscsi-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-common - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-interface - update to 11.0.0-150700.4.19.1
libvirt-daemon-qemu - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-iscsi - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-scsi-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-client-qemu - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-logical-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-nodedev-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-plugin-sanlock-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-plugin-lockd-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-config-network - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-interface-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-libxl - update to 11.0.0-150700.4.19.1
libvirt-daemon-proxy-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-network - update to 11.0.0-150700.4.19.1
libvirt-daemon-hooks - update to 11.0.0-150700.4.19.1
libvirt-daemon-log - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage - update to 11.0.0-150700.4.19.1
libvirt-daemon-common-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-qemu-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-client-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-plugin-sanlock - update to 11.0.0-150700.4.19.1
libvirt-daemon - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-rbd - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-rbd-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-doc - update to 11.0.0-150700.4.19.1
libvirt-daemon-xen - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-libxl-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-iscsi-direct - update to 11.0.0-150700.4.19.1
libvirt-libs-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-libs - update to 11.0.0-150700.4.19.1
libvirt-debugsource - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-core - update to 11.0.0-150700.4.19.1
libvirt-daemon-config-nwfilter - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-nwfilter-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-proxy - update to 11.0.0-150700.4.19.1
libvirt-daemon-lock-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-mpath - update to 11.0.0-150700.4.19.1
libvirt-nss - update to 11.0.0-150700.4.19.1
libvirt-client - update to 11.0.0-150700.4.19.1
libvirt - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-secret-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-core-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-lock - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-network-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-nodedev - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-secret - update to 11.0.0-150700.4.19.1
libvirt-nss-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-qemu - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-disk-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-iscsi-direct-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-plugin-lockd - update to 11.0.0-150700.4.19.1
libvirt-daemon-log-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-logical - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-nwfilter - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-scsi - update to 11.0.0-150700.4.19.1
libvirt-daemon-driver-storage-mpath-debuginfo - update to 11.0.0-150700.4.19.1
libvirt-devel - update to 11.0.0-150700.4.19.1

• https://www.wireshark.org/security/wnpa-sec-2026-06.html

• Multiple vulnerabilities in Wireshark
• Fedora 44 update for wireshark
• Fedora 44 update for wireshark
• SUSE update for wireshark