{"id":"CVE-2020-29374","details":"An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.","aliases":["A-174737879","ASB-A-174737879"],"modified":"2026-03-15T22:37:57.805919Z","published":"2020-11-28T07:15:11.960Z","related":["SUSE-SU-2021:0735-1","SUSE-SU-2021:0736-1","SUSE-SU-2021:0737-1","SUSE-SU-2021:0738-1","SUSE-SU-2021:0740-1","SUSE-SU-2021:0741-1","SUSE-SU-2021:1175-1","SUSE-SU-2021:1176-1","SUSE-SU-2021:1210-1","openSUSE-SU-2021:0393-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"},{"type":"ADVISORY","url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20210115-0002/"},{"type":"ADVISORY","url":"https://www.debian.org/security/2022/dsa-5096"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html"},{"type":"REPORT","url":"https://bugs.chromium.org/p/project-zero/issues/detail?id=2045"},{"type":"FIX","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17839856fd588f4ab6b789f482ed3ffd7c403e1f"},{"type":"EVIDENCE","url":"http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-29374.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"fixed":"5.7.3"}]},{"events":[{"introduced":"0"},{"last_affected":"9.0"}]},{"events":[{"introduced":"0"},{"last_affected":"10.0"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"}]}