PT-2025-36281 · Linux+5 · Linux Kernel+5
Published
2025-01-01
·
Updated
2026-04-20
·
CVE-2025-39686
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
insn rw emulate bits() function, used as a default handler for INSN READ and INSN WRITE instructions in the comedi subsystem, does not correctly handle multiple samples as indicated by the insn->n value. This function emulates INSN READ or INSN WRITE instruction handling with a constructed INSN BITS instruction. The issue occurs because insn rw emulate bits() currently only handles a single sample, while INSN READ and INSN WRITE instructions are expected to handle multiple samples. This can lead to kernel-infoleak errors when insn->n is greater than 1.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Information Disclosure
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Weakness Enumeration
Related Identifiers
Affected Products
Debian
Linuxmint
Linux Kernel
Red Os
Suse
Ubuntu