PT-2024-36980 · Linux+7 · Linux Kernel+7
Lianqin Hu
+1
·
Published
2024-12-27
·
Updated
2025-10-03
·
CVE-2024-56670
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 versions prior to 6.6.74
Description
A vulnerability in the Linux kernel's u serial driver has been resolved. The issue occurred when the
gs start io function accessed a null pointer, causing a crash. This happened in extreme cases where multiple threads accessed the u serial driver, and one thread executed the gs open function while another thread executed the gserial disconnect function, setting the port->port usb pointer to NULL. To fix this, a null pointer check was added to gs start io before attempting to access the port->port usb pointer.Recommendations
Update to Linux kernel version 6.6.74 or later to resolve the issue.
As a temporary workaround, consider adding a null pointer check to
gs start io before attempting to access the port->port usb pointer.Exploit
Fix
NULL Pointer Dereference
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Astra Linux
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu