Improper initialization in Linux kernel - CVE-2026-98700

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Main Vulnerability Database Vulnerabilities #VU157040

Improper initialization in Linux kernel - CVE-2026-98700

Published: October 22, 2026


Vulnerability identifier: #VU157040
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-98700
CWE-ID: CWE-665
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to potentially disrupt wireless communication through incorrect transmit-rate selection.

The vulnerability exists due to improper initialization of transmit band metadata in the mac80211 ieee80211_8023_xmit() function when processing 802.3 encapsulation offload frames on non-MLD interfaces. A local user can trigger transmission of affected frames to cause transmit-rate selection using an incorrect frequency band, potentially disrupting wireless communication.


Affected software

Linux kernel
SUSE Linux Micro
SUSE Linux Micro Extras
kernel-default
kernel-64kb
kernel-64kb-debugsource
kernel-64kb-devel
kernel-default-devel
kernel-syms
kernel-obs-build
kernel-obs-build-debugsource
kernel-default-debugsource
kernel-default-devel-debuginfo

How to mitigate CVE-2026-98700

Install security update from vendor's repository.

kernel-default - update to 6.4.0-159998.55.1
kernel-64kb - update to 6.4.0-159998.55.1
kernel-64kb-debugsource - update to 6.4.0-159998.55.1
kernel-64kb-devel - update to 6.4.0-159998.55.1
kernel-default-devel - update to 6.4.0-159998.55.1
kernel-syms - update to 6.4.0-159998.55.1
kernel-obs-build - update to 6.4.0-159998.55.1
kernel-obs-build-debugsource - update to 6.4.0-159998.55.1
kernel-default-debugsource - update to 6.4.0-159998.55.1
kernel-default-devel-debuginfo - update to 6.4.0-159998.55.1

External References

Related Security Bulletins