SB2026102414 - Improper input validation in Linux kernel wireless

Description

This security bulletin contains information about 1 vulnerability.

1) Improper input validation (CVE-ID: CVE-2026-98916)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

The vulnerability allows a local privileged user to cause a wireless driver to process an invalid link, potentially disrupting wireless operation.

The vulnerability exists due to improper validation of wireless link state in the nl80211_color_change() function when handling a color change request for a link that is not beaconing. A local privileged user can submit such a request to cause the kernel to invoke the driver's color change operation with an invalid link, potentially disrupting wireless operation.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/51423d370739aa3f701fdfbfcc52ecf321dfd71a
• https://git.kernel.org/stable/c/55308cee9c2196f39cd1ce8ee6c1fed9e12a00d4
• https://git.kernel.org/stable/c/dc4713539da73d2d2c03d064b22b0e6ab38bd361
• https://git.kernel.org/stable/c/e50965c702cfd41eb83464565f6272d4d4bfc00c