PT-2025-46601 · Linux+3 · Linux Kernel+3

Published

2025-09-05

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Updated

2026-05-07

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CVE-2025-40126

CVSS v2.0

4.9

Medium

VectorAV:A/AC:M/Au:S/C:P/I:P/A:P
Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)
Description An issue was identified in the Linux kernel related to inaccurate exception reporting within the copy from user and copy to user functions for UltraSPARC architectures. The problem stemmed from calculations within exception handlers triggered by user-space memory references during data copying. The fix addresses incorrect return values from these functions when a fault occurs, while maintaining the behavior of memcpy.
Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Unchecked Return Value

Weakness Enumeration

CWE-252

Related Identifiers

BDU:2025-15345
CVE-2025-40126
DLA-4379-1
USN-8029-1
USN-8029-2
USN-8029-3
USN-8030-1
USN-8033-1
USN-8033-2
USN-8033-3
USN-8033-4
USN-8033-5
USN-8033-6
USN-8033-7
USN-8033-8
USN-8034-1
USN-8034-2
USN-8048-1
USN-8095-1
USN-8095-2
USN-8095-3
USN-8095-4
USN-8095-5
USN-8100-1
USN-8125-1
USN-8126-1
USN-8141-1
USN-8163-1
USN-8163-2
USN-8165-1
USN-8243-1
USN-8261-1

Affected Products

Debian
Linuxmint
Linux Kernel
Ubuntu