PT-2025-18624 · Linux+2 · Linux Kernel+2
Published
2022-11-02
·
Updated
2025-07-11
·
CVE-2022-49907
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The issue concerns undefined behavior in the bit shift operation for
mdiobus register in the Linux kernel's MDIO driver. Specifically, shifting a signed 32-bit value by 31 bits is undefined. To address this, the significant bit is changed to unsigned. This problem is identified by the UBSAN warning, which reports a shift-out-of-bounds error in the mdio bus.c file. The error occurs because the left shift of 1 by 31 places cannot be represented in the type 'int'. The call trace includes functions such as mdiobus register, fixed mdio bus init, and kernel init.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Astra Linux
Linux Kernel
Suse