5.5

CVE-2023-53049

usb: ucsi: Fix NULL pointer deref in ucsi_connector_change()

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.177
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.105
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.22
Linux ≫ Linux Kernel Version >= 6.2 < 6.2.9
Linux ≫ Linux Kernel Version6.3 Updaterc1
Linux ≫ Linux Kernel Version6.3 Updaterc2
Linux ≫ Linux Kernel Version6.3 Updaterc3
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.17% 0.061
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/a6adfe9bbd6ac11e398b54ccd99a0f8eea09f3c0
Patch
https://git.kernel.org/stable/c/7dd27aed9c456670b3882877ef17a48195f21693
Patch
https://git.kernel.org/stable/c/1c5abcb13491da8c049f20462189c12c753ba978
Patch
https://git.kernel.org/stable/c/7ef0423e43f877a328454059d46763043ce3da44
Patch
https://git.kernel.org/stable/c/f87fb985452ab2083967103ac00bfd68fb182764
Patch