medium5.5
CVE-2023-53049
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->…
Impact
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
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.5 before 5.10.177 from 5.11 before 5.15.105 from 5.16 before 6.1.22 from 6.2 before 6.2.9 Version 6.3 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978
- https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693
- https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44
- https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0
- https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764