CVE-2025-40084
Last modified
CVE-2025-40084 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: ksmbd: transport_ipc: validate payload size before reading handle handle_response() dereferences the payload as a 4-byte handle without verifying that the declared payload size is at least 4 bytes. A malformed or truncated message from ksmbd.mountd can lead to a 4-byte read past the declared payload size. EPSS estimates a 0.19% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: transport_ipc: validate payload size before reading handle handle_response() dereferences the payload as a 4-byte handle without verifying that the declared payload size is at least 4 bytes. A malformed or truncated message from ksmbd.mountd can lead to a 4-byte read past the declared payload size. Validate the size before dereferencing. This is a minimal fix to guard the initial handle read.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 0626e6641f6b467447c81dd7678a69c66f7746cf, < a02e432d5130da4c723aabe1205bac805889fdb2; >= 0626e6641f6b467447c81dd7678a69c66f7746cf, < 2dc125f5da134c0915a840b62565c60a595673dd; >= 0626e6641f6b467447c81dd7678a69c66f7746cf, < 898d527ed94c19980a4d848f10057f1fed578ffb; >= 0626e6641f6b467447c81dd7678a69c66f7746cf, < 867ffd9d67285612da3f0498ca618297f8e41f01; >= 0626e6641f6b467447c81dd7678a69c66f7746cf, < 6f40e50ceb99fc8ef37e5c56e2ec1d162733fef0 |
| Linux | Linux | 5.15 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
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