CVE-2023-53049
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedMay 2, 2025
First seenMay 2, 2025
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel5.10.177, 5.15.105, 6.1.22, 6.2.9 or later
Patches
- git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978
- git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693
- git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44
- git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0
- git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.5 ≤ v < 5.10.177, 5.11 ≤ v < 5.15.105, 5.16 ≤ v < 6.1.22, 6.2 ≤ v < 6.2.9, 6.3 | 5.10.177, 5.15.105, 6.1.22, 6.2.9 |
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