CVE-2025-21734
linux: In the Linux kernel, the following vulnerability has been resolved: misc: fastrpc: Fix copy buffer page size For no...
CVE-2025-21734 is fixed in 61 products on 1 platform, first by DEBIAN-CVE-2025-21734, released February 27, 2025. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
7.8
high
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0020
10th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| dtb-aarch64 · opensuse-leap 15.6 | 6.4.0-150600.23.47.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-64kb · opensuse-leap 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-64kb · sles 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-azure · opensuse-leap 15.6 | 6.4.0-150600.8.34.2 | SUSE-SU-2025:1177-1 | Apr 8, 2025 |
| kernel-azure · sles 15.6 | 6.4.0-150600.8.34.2 | SUSE-SU-2025:1177-1 | Apr 8, 2025 |
| kernel-coco · sles 15.6 | 6.4.0-15061.21.coco15sp6.1 | SUSE-SU-2025:01919-1 | Jun 12, 2025 |
| kernel-coco_debug · sles 15.6 | 6.4.0-15061.21.coco15sp6.1 | SUSE-SU-2025:01919-1 | Jun 12, 2025 |
| kernel-debug · opensuse-leap 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-default · opensuse-leap 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-default · sles 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-default-base · opensuse-leap 15.6 | 6.4.0-150600.23.47.2.150600.12.20.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-default-base · sles 15.6 | 6.4.0-150600.23.47.2.150600.12.20.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-docs · opensuse-leap 15.6 | 6.4.0-150600.23.47.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-docs · sles 15.6 | 6.4.0-150600.23.47.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-kvmsmall · opensuse-leap 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-livepatch-SLE15-SP6-RT_Update_10 · sles 15.6 | 1-150600.1.5.1 | SUSE-SU-2025:1178-1 | Apr 8, 2025 |
| kernel-livepatch-SLE15-SP6_Update_10 · sles 15.6 | 1-150600.13.5.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-obs-build · opensuse-leap 15.6 | 6.4.0-150600.23.47.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-obs-build · sles 15.6 | 6.4.0-150600.23.47.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-obs-qa · opensuse-leap 15.6 | 6.4.0-150600.23.47.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-rt · opensuse-leap 15.6 | 6.4.0-150600.10.34.1 | SUSE-SU-2025:1178-1 | Apr 8, 2025 |
| kernel-rt_debug · opensuse-leap 15.6 | 6.4.0-150600.10.34.1 | SUSE-SU-2025:1178-1 | Apr 8, 2025 |
| kernel-source · opensuse-leap 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-source · sles 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-source-azure · opensuse-leap 15.6 | 6.4.0-150600.8.34.2 | SUSE-SU-2025:1177-1 | Apr 8, 2025 |
| kernel-source-azure · sles 15.6 | 6.4.0-150600.8.34.2 | SUSE-SU-2025:1177-1 | Apr 8, 2025 |
| kernel-source-coco · sles 15.6 | 6.4.0-15061.21.coco15sp6.1 | SUSE-SU-2025:01919-1 | Jun 12, 2025 |
| kernel-source-rt · opensuse-leap 15.6 | 6.4.0-150600.10.34.1 | SUSE-SU-2025:1178-1 | Apr 8, 2025 |
| kernel-syms · opensuse-leap 15.6 | 6.4.0-150600.23.47.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-syms · sles 15.6 | 6.4.0-150600.23.47.1 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-syms-azure · opensuse-leap 15.6 | 6.4.0-150600.8.34.1 | SUSE-SU-2025:1177-1 | Apr 8, 2025 |
| kernel-syms-azure · sles 15.6 | 6.4.0-150600.8.34.1 | SUSE-SU-2025:1177-1 | Apr 8, 2025 |
| kernel-syms-coco · sles 15.6 | 6.4.0-15061.21.coco15sp6.1 | SUSE-SU-2025:01919-1 | Jun 12, 2025 |
| kernel-syms-rt · opensuse-leap 15.6 | 6.4.0-150600.10.34.1 | SUSE-SU-2025:1178-1 | Apr 8, 2025 |
| kernel-uek · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-debug-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-doc · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-doc · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-tools · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek-tools · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-devel · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-devel · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-core · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-core · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-deprecated · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-deprecated · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-desktop · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-desktop · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-extra-netfilter · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-usb · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-usb · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-wireless · ol 10 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-uek64k-modules-wireless · ol 9 | 0:6.12.0-101.33.4.3.el9uek | ELSA-2025-20480 | Jul 17, 2025 |
| kernel-zfcpdump · opensuse-leap 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| kernel-zfcpdump · sles 15.6 | 6.4.0-150600.23.47.2 | SUSE-SU-2025:1180-1 | Apr 9, 2025 |
| linux · Debian 12.15 (bookworm) | 6.1.129-1 | DEBIAN-CVE-2025-21734 | Feb 27, 2025 |
| linux · Debian 13.5 (trixie) | 6.12.15-1 | DEBIAN-CVE-2025-21734 | Feb 27, 2025 |
| linux · Debian 14 | 6.12.15-1 | DEBIAN-CVE-2025-21734 | Feb 27, 2025 |
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