CVE-2025-21734 | BDVDB-2026-268474 Detail
LinuxLinux
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.
Impact#
Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: local.
Weaknesses#
No weakness recorded in the source data.
References#
- https://git.kernel.org/stable/c/c56ba3ea8e3c9a69a992aad18f7a65e43e51d623
- https://git.kernel.org/stable/c/c0464bad0e85fcd5d47e4297d1e410097c979e55
- https://git.kernel.org/stable/c/24a79c6bc8de763f7c50f4f84f8b0c183bc25a51
- https://git.kernel.org/stable/c/c3f7161123fcbdc64e90119ccce292d8b66281c4
- https://git.kernel.org/stable/c/e966eae72762ecfdbdb82627e2cda48845b9dd66
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
Exploit#
No public exploit known
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.