In the Linux kernel, the following vulnerability has been resolved:
sparc: fix accurate exception reporting in copy_{from_to}_user for Niagara
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 and a broken epilogue in the exception handlers. This will
prevent crashes and ensure correct return values of copy_from_user and
copy_to_user in the faulting case. The behaviour of memcpy stays unchanged.
sparc: fix accurate exception reporting in copy_{from_to}_user for Niagara
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 and a broken epilogue in the exception handlers. This will
prevent crashes and ensure correct return values of copy_from_user and
copy_to_user in the faulting case. The behaviour of memcpy stays unchanged.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux | unaffected |
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| Linux | Linux | affected |
|
No data.
No data.
OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.
| Vendors | Products |
|---|---|
|
Linux
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|
Linux Kernel
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Advisories
| Source | ID | Title |
|---|---|---|
 Debian DLA |
DLA-4379-1 | linux-6.1 security update |
 Ubuntu USN |
USN-8029-1 | Linux kernel vulnerabilities |
| Ubuntu USN |
USN-8030-1 | Linux kernel (GCP) vulnerabilities |
| Ubuntu USN |
USN-8033-1 | Linux kernel vulnerabilities |
| Ubuntu USN |
USN-8033-2 | Linux kernel vulnerabilities |
| Ubuntu USN |
USN-8033-3 | Linux kernel (FIPS) vulnerabilities |
| Ubuntu USN |
USN-8034-1 | Linux kernel (NVIDIA Tegra) vulnerabilities |
| Ubuntu USN |
USN-8033-4 | Linux kernel (AWS) vulnerabilities |
| Ubuntu USN |
USN-8029-2 | Linux kernel vulnerabilities |
| Ubuntu USN |
USN-8033-5 | Linux kernel vulnerabilities |
| Ubuntu USN |
USN-8034-2 | Linux kernel (NVIDIA Tegra IGX) vulnerabilities |
| Ubuntu USN |
USN-8048-1 | Linux kernel (OEM) vulnerabilities |
| Ubuntu USN |
USN-8033-6 | Linux kernel (NVIDIA) vulnerabilities |
| Ubuntu USN |
USN-8033-7 | Linux kernel vulnerabilities |
| Ubuntu USN |
USN-8033-8 | Linux kernel (Intel IoTG) vulnerabilities |
| Ubuntu USN |
USN-8029-3 | Linux kernel (Azure) vulnerabilities |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Mon, 01 Dec 2025 06:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Wed, 12 Nov 2025 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Linux
Linux linux Kernel |
|
| Vendors & Products |
Linux
Linux linux Kernel |
Wed, 12 Nov 2025 10:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | In the Linux kernel, the following vulnerability has been resolved: sparc: fix accurate exception reporting in copy_{from_to}_user for Niagara 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 and a broken epilogue in the exception handlers. This will prevent crashes and ensure correct return values of copy_from_user and copy_to_user in the faulting case. The behaviour of memcpy stays unchanged. | |
| Title | sparc: fix accurate exception reporting in copy_{from_to}_user for Niagara | |
| References |
|
|
Projects
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MITRE
Status: PUBLISHED
Assigner: Linux
Published:
Updated: 2025-12-01T06:18:15.903Z
Reserved: 2025-04-16T07:20:57.167Z
Link: CVE-2025-40112
Vulnrichment
No data.
NVD
Status : Awaiting Analysis
Published: 2025-11-12T11:15:40.460
Modified: 2025-11-12T16:19:12.850
Link: CVE-2025-40112
Redhat
No data.
OpenCVE Enrichment
Updated: 2025-11-12T22:12:43Z
Weaknesses
No weakness.