CVE-2025-21734 — Out-of-bounds Write in Linux
Severity
7.8HIGHNVD
OSV7.1OSV5.9OSV5.5
EPSS
0.1%
top 82.12%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedFeb 27
Latest updateSep 3
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 a…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9
Affected Packages9 packages
▶CVEListV5linux/linux02b45b47fbe84e23699bb6bdc74d4c2780e282b4 — c56ba3ea8e3c9a69a992aad18f7a65e43e51d623+5
Patches
🔴Vulnerability Details
14OSV▶
linux-aws-6.8, linux-gke, linux-gkeop, linux-nvidia, linux-nvidia-6.8, linux-nvidia-lowlatency, linux-oracle, linux-oracle-6.8 vulnerabilities↗2025-07-22