Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected bdc62f2bae8fb0e8e99574de5232f0a3c54a27df before a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0; affected bdc62f2bae8fb0e8e99574de5232f0a3c54a27df before 7dd27aed9c456670b3882877ef17a48195f21693; affected bdc62f2bae8fb0e8e99574de5232f0a3c54a27df before 1c5abcb13491da8c049f20462189c12c753ba978; affected bdc62f2bae8fb0e8e99574de5232f0a3c54a27df before 7ef0423e43f877a328454059d46763043ce3da44; affected bdc62f2bae8fb0e8e99574de5232f0a3c54a27df before f87fb985452ab2083967103ac00bfd68fb182764 |
| Linux / Linux | affected 5.5; unaffected 0 before 5.5; unaffected 5.10.177 through 5.10.*; unaffected 5.15.105 through 5.15.*; unaffected 6.1.22 through 6.1.*; unaffected 6.2.9 through 6.2.*; unaffected 6.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0
- https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693
- https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978
- https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44
- https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764