CVE-2025-40112sparc: fix accurate exception reporting in copy_{from_to}_user for Niagara
- 7.8HighCVSS base score
- 0.17%Exploitation in 30 daysEPSS · top 94% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
- 7 months later
· 7 months later
Published
- 9 months later
· 9 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| LinuxCNA (assigner) | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | High7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.17% · top 94% of all CVEs (14 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.
Affected products
- affected 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e – < 05440320ea3e249d5f984918f2bf51210c1a7c03
- affected 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e – < 7823fc4d8ab5e57f8db7806ff2530c03c166c4bb
- affected 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e – < 37547d8e6eba87507279ee3dfddfd9dc46335454
- affected 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e – < a365ee556e45f780ee322b349a06efdad0c1458f
- affected 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e – < 8cdeb5e482d3fdce7e825444b6ca3865e24c0228
- affected 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e – < a90ce516a73dbe087f9bf3dbf311301a58d125c6
- affected 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e – < 088c5098ec6d6b0396edfbf3dad3e81de8469c1c
- affected 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e – < 0b67c8fc10b13a9090340c5f8a37d308f4e1571c
- affected bfc8be6593097cb074d3912ba2f27565cfbb7d6e
- affected a15859f9d8396cce7c55ccdb7e75f70f14cbc349
- affected 4.4.34 – < 4.5
- affected 4.8.10 – < 4.9
- affected 4.9
- unaffected < 4.9
- unaffected 5.4.301 – ≤ 5.4.*
- unaffected 5.10.246 – ≤ 5.10.*
- unaffected 5.15.195 – ≤ 5.15.*
- unaffected 6.1.156 – ≤ 6.1.*
- unaffected 6.6.112 – ≤ 6.6.*
- unaffected 6.12.53 – ≤ 6.12.*
- unaffected 6.17.3 – ≤ 6.17.*
- unaffected 6.18 – ≤ *
References
References8
- https://git.kernel.org/stable/c/05440320ea3e249d5f984918f2bf51210c1a7c03 (opens in a new tab)
- https://git.kernel.org/stable/c/7823fc4d8ab5e57f8db7806ff2530c03c166c4bb (opens in a new tab)
- https://git.kernel.org/stable/c/37547d8e6eba87507279ee3dfddfd9dc46335454 (opens in a new tab)
- https://git.kernel.org/stable/c/a365ee556e45f780ee322b349a06efdad0c1458f (opens in a new tab)
- https://git.kernel.org/stable/c/8cdeb5e482d3fdce7e825444b6ca3865e24c0228 (opens in a new tab)
- https://git.kernel.org/stable/c/a90ce516a73dbe087f9bf3dbf311301a58d125c6 (opens in a new tab)
- https://git.kernel.org/stable/c/088c5098ec6d6b0396edfbf3dad3e81de8469c1c (opens in a new tab)
- https://git.kernel.org/stable/c/0b67c8fc10b13a9090340c5f8a37d308f4e1571c (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-124970 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-40112)Record last updated .