Description
In the Linux kernel, the following vulnerability has been resolved: usb: ucsi: Fix NULL pointer deref in ucsi_connector_change() When ucsi_init() fails, ucsi->connector is NULL, yet in case of ucsi_acpi we may still get events which cause the ucs_acpi code to call ucsi_connector_change(), which then derefs the NULL ucsi->connector pointer. Fix this by not setting ucsi->ntfy inside ucsi_init() until ucsi_init() has succeeded, so that ucsi_connector_change() ignores the events because UCSI_ENABLE_NTFY_CONNECTOR_CHANGE is not set in the ntfy mask.
Affected products
linux: linux kernel
References5
- git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978 Patch
- git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693 Patch
- git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44 Patch
- git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0 Patch
- git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764 Patch
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 10 · as of 7 November 2026
- CWE
- CWE-476
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