7.8

CVE-2025-40112: linux

CVSS: 7.8v3.1HighDeferred
AliasesUBUNTU-CVE-2025-40112DEBIAN-CVE-2025-40112
Published 12-11-2025Last modified 05-08-2026
Open JSON

Vulnerability summary

CVE-2025-40112 is a high (CVSS 7.8) vulnerability in linux. EPSS estimates a 0.17% chance of exploitation in the next 30 days, higher than 5.9% of scored vulnerabilities.

Overall risk
31/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v3.1 (CVE.org)
EPSS score
0.17%
0%100%
Low · +0.01 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 30 · Related 29
DLA-4379-1USN-8029-1USN-8029-2USN-8029-3USN-8030-1USN-8033-1

Timeline

  1. 12-11-2025
    PublishedVulnerability first disclosed.
  2. 05-08-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

0.17%

Chance of exploitation in the next 30 days

Percentile

6%

Versus all other CVEs

30-day change

+0.01 pp

From 0.16% on 19-09-2026

19-09-202619-10-2026
EPSS score
0.17%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Ubuntu153 products
  • linuxAll versions (No fix recorded) | < 5.15.0-170.180 | < 6.8.0-106.106 | < 6.17.0-14.14
  • linux-allwinner-5.19All versions (No fix recorded)
  • linux-awsAll versions (No fix recorded) | < 5.15.0-1100.107 | < 6.8.0-1050.53 | < 6.17.0-1007.7
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
Debian1 product
  • linux< 6.1.158-1 | < 6.12.57-1 | < 6.17.6-1
Linux1 product
  • linux≥ 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e, < 05440320ea3e249d5f984918f2bf51210c1a7c03 | ≥ 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e, < 7823fc4d8ab5e57f8db7806ff2530c03c166c4bb | ≥ 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e, < 37547d8e6eba87507279ee3dfddfd9dc46335454 | ≥ 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e, < a365ee556e45f780ee322b349a06efdad0c1458f | ≥ 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e, < 8cdeb5e482d3fdce7e825444b6ca3865e24c0228 | ≥ 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e, < a90ce516a73dbe087f9bf3dbf311301a58d125c6 | ≥ 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e, < 088c5098ec6d6b0396edfbf3dad3e81de8469c1c | ≥ 7ae3aaf53f1695877ccd5ebbc49ea65991e41f1e, < 0b67c8fc10b13a9090340c5f8a37d308f4e1571c | bfc8be6593097cb074d3912ba2f27565cfbb7d6e | a15859f9d8396cce7c55ccdb7e75f70f14cbc349 | ≥ 4.4.34, < 4.5 | ≥ 4.8.10, < 4.9 | 4.9

3 vendors · 155 products

References

41 links
Show all 41 references