CVE-2026-89885: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: media: platform: mtk-mdp3: Fix SCP device refcounting mdp_probe() first tries to get the SCP handle with scp_get(). When that fails, it falls back to looking up the SCP platform device with __get_pdev_by_id() and then reads its driver data. The fallback lookup returns the platform device with a reference, just like scp_get() does. However, the fallback path currently drops that reference immediately after platform_get_drvdata(). The driver later still calls scp_put(mdp->scp) unconditionally from the probe error path and from mdp_video_device_release(), which drops the SCP device reference again. Keep the fallback reference until the existing scp_put() call, so that the fallback path follows the same ownership rules as the scp_get() path.

Засегнати продукти

• Linux Linux: db4d27e6bbbf511f9cdb33f682535a0a3cb7c403 преди dce13bd9bade3ecc1acb7579397f24743850997f; 31ba1a4d7a5d9466f6ef4910a372b8200f8aad19 преди 252850653569fdb1a259937e02325cf32c8f0970; 8f6f3aa21517ef34d50808af0c572e69580dca20 преди 0259ade4c4ceaf1e184a7c1aea8071ad398f9b6f; 8f6f3aa21517ef34d50808af0c572e69580dca20 преди 55793e4665b7f15151e6f5ab51ca980e73abed5d; 6.12.64 преди 6.12.110; 6.18.4 преди 6.18.51
• Linux Linux: 6.19; преди 6.19; 6.12.110 до 6.12.*; 6.18.51 до 6.18.*; 7.2.5 до 7.2.*; от 7.3 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-89885
• https://nvd.nist.gov/vuln/detail/CVE-2026-89885
• https://git.kernel.org/stable/c/dce13bd9bade3ecc1acb7579397f24743850997f
• https://git.kernel.org/stable/c/252850653569fdb1a259937e02325cf32c8f0970
• https://git.kernel.org/stable/c/0259ade4c4ceaf1e184a7c1aea8071ad398f9b6f
• https://git.kernel.org/stable/c/55793e4665b7f15151e6f5ab51ca980e73abed5d