SB2026061069 - Improper Check or Handling of Exceptional Conditions in Linux kernel wangxun libwx driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-46297)

CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions

CVSSv4: 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/E:U/U:Clear

The vulnerability allows a local user to cause a denial of service.

The vulnerability exists due to improper resource or shutdown handling in the VF misc interrupt registration logic in libwx when registering the VF misc interrupt handler. A local user can trigger the vulnerable interrupt registration path to cause a denial of service.

The issue results in a kernel WARNING when the interrupt is registered with IRQF_ONESHOT and no threaded handler.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/1bca036fe3607182c21f05e2b262167edbef086c
• https://git.kernel.org/stable/c/7a33345153eeeda195c55f15be27074e4c3b5109
• https://git.kernel.org/stable/c/a841574c6e573132681aa57f9b43a0a897a423f6