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.
Metrics
No CVSS score has been published yet.
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada, < 0bf3dc3a2156f1c5ddaba4b85d09767874634114; >= cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada, < 41c18baee66134e6ef786eb075c1b6adb22432b0; >= cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada, < 59424dc0d0e044b2eb007686a4724ddd91d57db5; >= cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada, < 9b137f277cc3297044aabd950f589e505d30104c; >= cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada, < 674ff598148a28bae0b5372339de56f2abf0b1d1; >= cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada, < 7de3a75bbc8465d816336c74d50109e73501efab; >= cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada, < 57c278500fce3cd4e1c540700c0b05426a958393; >= cb736fdbb208eb3420f1a2eb2bfc024a6e9dcada, < 4fba1713001195e59cfc001ff1f2837dab877efb; 1731d90d8a558ecb20cdee0c2c001ae8e15c251d; b0580eadc19ff3a617a7d07cfaf2a985153c114e; >= 4.4.34, < 4.5; >= 4.8.10, < 4.9 |
| Linux | Linux | 4.9 |
References
- https://git.kernel.org/stable/c/0bf3dc3a2156f1c5ddaba4b85d09767874634114
- https://git.kernel.org/stable/c/41c18baee66134e6ef786eb075c1b6adb22432b0
- https://git.kernel.org/stable/c/4fba1713001195e59cfc001ff1f2837dab877efb
- https://git.kernel.org/stable/c/57c278500fce3cd4e1c540700c0b05426a958393
- https://git.kernel.org/stable/c/59424dc0d0e044b2eb007686a4724ddd91d57db5
- https://git.kernel.org/stable/c/674ff598148a28bae0b5372339de56f2abf0b1d1
- https://git.kernel.org/stable/c/7de3a75bbc8465d816336c74d50109e73501efab
- https://git.kernel.org/stable/c/9b137f277cc3297044aabd950f589e505d30104c
Timeline
- Published
- Nov 12, 2025
- Last modified
- Oct 19, 2026
- NVD status
- Deferred