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->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.
| Software | From | Fixed in |
|---|---|---|
| linux / linux_kernel | 5.5 | 5.10.177 |
| linux / linux_kernel | 5.11 | 5.15.105 |
| linux / linux_kernel | 5.16 | 6.1.22 |
| linux / linux_kernel | 6.2 | 6.2.9 |
| linux / linux_kernel | 6.3-rc1 | 6.3-rc1.x |
| linux / linux_kernel | 6.3-rc2 | 6.3-rc2.x |
| linux / linux_kernel | 6.3-rc3 | 6.3-rc3.x |
- 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
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