PT-2024-8454 · Linux+3 · Linux Kernel+3
Tianhao Zhao
·
Published
2022-09-19
·
Updated
2024-11-05
·
CVE-2022-48647
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 is related to a NULL pointer dereference in the Linux kernel's sfc component when using legacy interrupts. In legacy interrupt mode, the tx channel offset was hardcoded to 1, but this is not correct if efx sepparate tx channels is false. As a result, when trying to send traffic, the system attempts to access tx queues from an uninitialized channel, leading to errors and a kernel NULL pointer dereference. The
efx hard start xmit function is involved in this process.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
Astra Linux
Linux Kernel
Red Os
Suse