SB2026062963 - NULL pointer dereference in Linux kernel microsoft mana driver

Description

This security bulletin contains information about 1 vulnerability.

1) NULL pointer dereference (CVE-ID: CVE-2026-53297)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 a null pointer dereference in mana_remove() when handling a second invocation after a failed PM resume callback. A local user can trigger device unbind after a failed resume path to cause a denial of service.

The issue occurs because a failed resume callback does not automatically unbind the driver, allowing mana_remove() to be invoked again later.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/50271d7ec95144d26808025b508f463780517d3c
• https://git.kernel.org/stable/c/a1ddfd2c0b7a48e5239fadd2a24cc4bc2cda90e6
• https://git.kernel.org/stable/c/bbe5c3c570645a4ceb120979d3ee203a1583d775