Upstream information

CVE-2025-40126 at MITRE

Description

In the Linux kernel, the following vulnerability has been resolved:

sparc: fix accurate exception reporting in copy_{from_to}_user for UltraSPARC

The referenced commit introduced exception handlers on user-space memory
references in copy_from_user and copy_to_user. These handlers return from
the respective function and calculate the remaining bytes left to copy
using the current register contents. This commit fixes a couple of bad
calculations. This will fix the return value of copy_from_user and
copy_to_user in the faulting case. The behaviour of memcpy stays unchanged.

SUSE information

Overall state of this security issue: Does not affect SUSE products

SUSE Bugzilla entry: 1253370 [NEW]

No SUSE Security Announcements cross referenced.

SUSE Timeline for this CVE

CVE page created: Wed Nov 12 22:19:44 2025
CVE page last modified: Wed Nov 12 22:19:44 2025