CVE-2023-53049
N/A
N/A
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0 | affected |
| Linux | Linux | bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 7dd27aed9c456670b3882877ef17a48195f21693 | affected |
| Linux | Linux | bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 1c5abcb13491da8c049f20462189c12c753ba978 | affected |
| Linux | Linux | bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < 7ef0423e43f877a328454059d46763043ce3da44 | affected |
| Linux | Linux | bdc62f2bae8fb0e8e99574de5232f0a3c54a27df < f87fb985452ab2083967103ac00bfd68fb182764 | affected |
| Linux | Linux | 5.5 | affected |
| Linux | Linux | 0 < 5.5 | unaffected |
| Linux | Linux | 5.10.177 <= 5.10.* | unaffected |
| Linux | Linux | 5.15.105 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.22 <= 6.1.* | unaffected |
| Linux | Linux | 6.2.9 <= 6.2.* | unaffected |
| Linux | Linux | 6.3 <= * | unaffected |
Weaknesses
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
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