SB2026052821 - Improper resource shutdown or release in Linux kernel qat qat_6xxx driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper resource shutdown or release (CVE-ID: CVE-2026-46060)

CWE-ID: CWE-404 - Improper Resource Shutdown or Release

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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 shutdown in IRQ handler cleanup in the qat driver when handling a device probe failure after partial initialization. A local user can trigger a probe failure after adf_dev_up() partially completes to cause a denial of service.

The issue occurs because IRQ handlers can remain attached while MSI-X vectors are released during devres cleanup.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/27f561bf894e46bdc2d6209c50884adad79d8277
• https://git.kernel.org/stable/c/7cd651f1357dcc477e6483c3a4706836b46bdc92
• https://git.kernel.org/stable/c/95aed2af87ec43fa7624cc81dd13d37824ad4972