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ALSA-2026:1714 — Moderate: wireshark security update

Affected: AlmaLinux:10: wireshark, AlmaLinux:10: wireshark-cli, AlmaLinux:10: wireshark-devel

The wireshark packages contain a network protocol analyzer used to capture and browse the traffic running on a computer network.

Security Fix(es):

* Wireshark: NULL Pointer Dereference in Wireshark (CVE-2025-9817)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

EUVD-2026-277778

fkie_cve-2025-9817

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service

GHSA-3mqq-9w3m-xpj8

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service

OESA-2025-2263 — wireshark security update

Affected: openEuler:24.03-LTS: wireshark

Security Fix(es):

A vulnerability classified as problematic (CWE-476) has been found in Wireshark versions 4.4.0 to 4.4.8. The application dereferences a pointer that it expects to be valid but is NULL, typically causing a crash or exit, impacting availability. Upgrading to version 4.4.9 eliminates this vulnerability.(CVE-2025-9817)

openSUSE-SU-2025:15522-1 — libwireshark18-4.4.9-2.1 on GA media

libwireshark18-4.4.9-2.1 on GA media

RHSA-2026:2763 — Red Hat Security Advisory: wireshark security update

Wireshark: NULL Pointer Dereference in Wireshark

SUSE-SU-2026:20222-1 — Security update for wireshark

Security update for wireshark

UBUNTU-CVE-2025-9817

Affected: Ubuntu:Pro:14.04:LTS: wireshark, Ubuntu:Pro:16.04:LTS: wireshark, Ubuntu:Pro:18.04:LTS: wireshark, Ubuntu:Pro:20.04:LTS: wireshark, Ubuntu:Pro:22.04:LTS: wireshark, Ubuntu:24.04:LTS: wireshark, Ubuntu:25.10: wireshark, Ubuntu:26.04:LTS: wireshark

SSH dissector crash in Wireshark 4.4.0 to 4.4.8 allows denial of service

WID-SEC-W-2025-1932 — Wireshark: Schwachstelle ermöglicht Denial of Service

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Wireshark ausnutzen, um einen Denial of Service Angriff durchzuführen.