PT-2024-32119 · Linux+5 · Linux Kernel+5
Published
2024-08-20
·
Updated
2025-09-29
·
CVE-2024-46691
CVSS v3.1
5.5
Medium
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue arises from the
ucsi unregister() function being called from atomic context, which expects a sleepable context. This happens because the pmic glink client list is moved under a spinlock, accessed by the rpmsg/glink callback invoked from IRQ context. As a result, ucsi unregister() can occur after the remote processor and communication link are gone, leading to a NULL pointer dereference. The pmic glink send() function is amended with a check to avoid this dereference, resulting in an error entry in the kernel log: ucsi glink.pmic glink ucsi pmic glink.ucsi.0: failed to send UCSI write request: -5.Recommendations
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
Alt Linux
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu