{"id":"CVE-2025-21734","summary":"misc: fastrpc: Fix copy buffer page size","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nmisc: fastrpc: Fix copy buffer page size\n\nFor non-registered buffer, fastrpc driver copies the buffer and\npass it to the remote subsystem. There is a problem with current\nimplementation of page size calculation which is not considering\nthe offset in the calculation. This might lead to passing of\nimproper and out-of-bounds page size which could result in\nmemory issue. Calculate page start and page end using the offset\nadjusted address instead of absolute address.","modified":"2026-04-02T12:45:12.020077Z","published":"2025-02-27T02:12:11.663Z","related":["SUSE-SU-2025:01919-1","SUSE-SU-2025:1177-1","SUSE-SU-2025:1178-1","SUSE-SU-2025:1180-1","SUSE-SU-2025:20190-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20260-1","SUSE-SU-2025:20270-1","USN-7521-2"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21734.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/24a79c6bc8de763f7c50f4f84f8b0c183bc25a51"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c0464bad0e85fcd5d47e4297d1e410097c979e55"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c3f7161123fcbdc64e90119ccce292d8b66281c4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/c56ba3ea8e3c9a69a992aad18f7a65e43e51d623"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e966eae72762ecfdbdb82627e2cda48845b9dd66"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21734.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21734"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"02b45b47fbe84e23699bb6bdc74d4c2780e282b4"},{"fixed":"c56ba3ea8e3c9a69a992aad18f7a65e43e51d623"},{"fixed":"c0464bad0e85fcd5d47e4297d1e410097c979e55"},{"fixed":"24a79c6bc8de763f7c50f4f84f8b0c183bc25a51"},{"fixed":"c3f7161123fcbdc64e90119ccce292d8b66281c4"},{"fixed":"e966eae72762ecfdbdb82627e2cda48845b9dd66"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21734.json"}}],"schema_version":"1.7.5"}