PT-2025-31075 · Linux+5 · Linux Kernel+5
Published
2025-07-07
·
Updated
2026-04-20
·
CVE-2025-38478
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 Linux kernel contains a flaw in Comedi subdevice instruction handlers where data elements beyond the first
insn->n elements may be accessed in certain cases. The do insn ioctl() and do insnlist ioctl() functions allocate memory, but do not fully initialize it. For instruction codes that write to the subdevice, uninitialized data could be read by the subdevice instruction handler. The issue is addressed by initializing the first MIN SAMPLES elements with 0 before calling these instruction handlers.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Use of Uninitialized Resource
Improper Initialization
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Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu