SB2026072163 - Race condition in Linux kernel renesas rzv2h-ivc driver

Description

This security bulletin contains information about 1 vulnerability.

1) Race condition (CVE-ID: CVE-2026-53380)

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

CVSSv4: 6.8 [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]

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

The vulnerability exists due to concurrent modification of a shared buffer list in rzv2h_ivc_transfer_buffer() when processing buffers from a separate workqueue. A local user can trigger concurrent buffer list operations to cause a denial of service.

The issue affects access to rzv2h_ivc::buffers.queue because list_del() is performed outside the spinlock-protected critical section.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/72773ff1cdfaebc593f53b1719b2c1773ecf8c43
• https://git.kernel.org/stable/c/c746522bd3264132ab2e2382e96e19cdb8a6c1ba