CVE-2025-40036 Details
Description
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: fix possible map leak in fastrpc_put_args copy_to_user() failure would cause an early return without cleaning up the fdlist, which has been updated by the DSP. This could lead to map leak. Fix this by redirecting to a cleanup path on failure, ensuring that all mapped buffers are properly released before returning.
A vulnerability in the Linux kernel's FastRPC implementation can lead to a map leak. This issue arises in the 'fastrpc_put_args' function, where a failure in the 'copy_to_user' operation causes an early return without properly cleaning up the file descriptor list. The fdlist, updated by the Digital Signal Processor (DSP), remains uncleared, potentially leading to a map leak. The vulnerability affects several versions of the Linux kernel.
Users can upgrade to the latest version of the Linux kernel where this vulnerability has been addressed. Instructions for downloading the patched version are available on the official Linux kernel website.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 28, 2025References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/3ad42dc66445df6977cf4be0c06f1a655299ce6c | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/78d33a041555db03903e8037fd053ed74fbd88cb | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/a085658264d0c8d4f795d4631f77d7289a021de9 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/c000f65f0ac93d9f9cc69a230d372f6ca93e4879 | kernel.org | Source CodeVendor |
| https://git.kernel.org/stable/c/da1ba64176e0138f2bfa96f9e43e8c3640d01e1e | kernel.org | Source CodeVendor |
Weakness Enumeration
No weakness enumeration is available for this CVE.
Affected Products
| Product | Versions |
|---|---|
| Linux kernel | All versions |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Oct 28, 2025 | New CVE Received | kernel.org |