SB20260812320 - Improper resource shutdown or release in Linux kernel media dvb-frontends driver

Description

This security bulletin contains information about 1 vulnerability.

1) Improper resource shutdown or release (CVE-ID: CVE-2026-68213)

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

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 shutdown or release in rtl2832_sdr_start_streaming() and queued buffer handling when handling start_streaming() failures. A local user can trigger a streaming start failure to cause a denial of service.

The issue occurs because buffers queued before streaming are not returned to the videobuf2 framework on error paths, which can trigger a WARN_ON and leak queued buffers.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/0b08c0403cf672a121ace4eff647a9b240bd4e1b
• https://git.kernel.org/stable/c/33ca0aab6f4bd90921fc1395478f38f72c4d19af
• https://git.kernel.org/stable/c/465dc8e71d2db2ed603e749fa71392bcdccf07eb
• https://git.kernel.org/stable/c/894e83509c66910112b9eaeaa8cd66cd9806db91
• https://git.kernel.org/stable/c/fc0b18782aab4e35078efe72863df8eab46560a8