SB20260918252 - Race condition in Linux kernel arm arm-smmu-v3 driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-90430)

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

CVSSv4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

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

The vulnerability exists due to a race condition in the Tegra241 CMDQV LVCMDQ initialization and error-handling logic when an error interrupt is handled while an LVCMDQ is being initialized. A local user can cause an LVCMDQ error to be handled during initialization to cause a denial of service.

The condition can occur when an LVCMDQ error is inherited across a kexec.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/792f720fc23fe5bd6508d40ed73ae739debd6dcb
• https://git.kernel.org/stable/c/b4535b403d6bf9bcc24dbd62096711329b9c612c
• https://git.kernel.org/stable/c/cbc41aacd49e695338940196e7084770365e1b68