SB20260812335 - Missing Release of Resource after Effective Lifetime in Linux kernel stm32 stm32-dcmipp driver

Description

This security bulletin contains information about 1 vulnerability.

1) Missing Release of Resource after Effective Lifetime (CVE-ID: CVE-2026-68211)

CWE-ID: CWE-772 - Missing Release of Resource after Effective Lifetime

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 improper resource management in dcmipp_bytecap_start_streaming() when starting video buffer streaming with an unresolved source subdevice in the media graph. A local user can trigger streaming setup in this state to cause a denial of service.

The issue occurs because queued buffers are not returned on the early error path, which can trigger a WARN_ON and leak buffers.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/624af2d4b5e9d3dd366538e4fb4a2a037792a7e3
• https://git.kernel.org/stable/c/ed342a86bb2f9c1b44a0fc4f6b08c14073946e4f
• https://git.kernel.org/stable/c/ffc8eec06378a340d708c889184ab3e14b57d540