Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix copy buffer page size For non-registered buffer, fastrpc driver copies the buffer and pass it to the remote subsystem. There is a problem with current implementation of page size calculation which is not considering the offset in the calculation. This might lead to passing of improper and out-of-bounds page size which could result in memory issue. Calculate page start and page end using the offset adjusted address instead of absolute address.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.2, < 6.1.129 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/24a79c6bc8de763f7c50f4f84f8b0c183bc25a51Patch
- https://git.kernel.org/stable/c/c0464bad0e85fcd5d47e4297d1e410097c979e55Patch
- https://git.kernel.org/stable/c/c3f7161123fcbdc64e90119ccce292d8b66281c4Patch
- https://git.kernel.org/stable/c/c56ba3ea8e3c9a69a992aad18f7a65e43e51d623Patch
- https://git.kernel.org/stable/c/e966eae72762ecfdbdb82627e2cda48845b9dd66Patch
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
FAQ
What is CVE-2025-21734?
CVE-2025-21734 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix copy buffer page size For non-registered buffer, fastrpc driver copies the buffer and pass it to the remote sub...
How severe is CVE-2025-21734?
CVE-2025-21734 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-21734?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.