PT-2025-18813 · Linux+3 · Linux Kernel+3
Published
2023-03-08
·
Updated
2026-01-28
·
CVE-2023-53049
CVSS v2.0
6.0
Medium
| Vector | AV:L/AC:H/Au:S/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A NULL pointer dereference issue has been identified in the Linux kernel, specifically in the
ucsi connector change() function. This issue occurs when ucsi init() fails, resulting in a NULL ucsi->connector pointer. However, in the case of ucsi acpi, events may still be triggered, causing the ucsi acpi code to call ucsi connector change(), which then dereferences the NULL ucsi->connector pointer. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.Recommendations
To resolve this issue, ensure that
ucsi init() has succeeded before setting ucsi->ntfy, so that ucsi connector change() ignores events because UCSI ENABLE NTFY CONNECTOR CHANGE is not set in the ntfy mask. As a temporary workaround, consider disabling the ucsi connector change() function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.Exploit
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Red Os
Suse