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OpenAdvisories
Medium · 5.5 CVE-2026-96421 EUVD-2026-88709GHSA-wg4g-83vx-mw68

Improperly Controlled Sequential Memory Allocation in Wireshark

Published Sep 29, 2026 · Updated Sep 29, 2026 · Assigned by GitLab

Description

USB HID protocol dissector infinite loop and memory leak in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service

Affected products

VendorProductAffectedFixed
Wireshark Foundation Wireshark 4.6.0 – < 4.6.9, 4.4.0 – < 4.4.19 4.6.9

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 wireshark 4.6.9-1 —
Debian 13 wireshark 4.4.19-0+deb13u1 —
Debian 12 wireshark No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 wireshark No fix yet —
Ubuntu 26.04 LTS wireshark No fix yet —
Ubuntu 24.04 LTS wireshark No fix yet —
Show 5 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 22.04 LTS wireshark No fix yet —
Ubuntu Pro 20.04 LTS wireshark No fix yet —
Ubuntu Pro 18.04 LTS wireshark No fix yet —
Ubuntu Pro 16.04 LTS wireshark No fix yet —
Ubuntu Pro 14.04 LTS wireshark No fix yet —
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed wireshark 4.6.9-1.1 openSUSE-SU-2026:11912-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 wireshark-cli +1 1:4.6.9-1.amzn2023.0.2 ALAS2023-2026-3252

Azure Linux

ReleasePackageFixed inAdvisory
Azure Linux 3 wireshark No fix yet —

Advisories 3

References