CVE-2020-29374
LOW 3.6EPSS 0.4%
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.
- CVSS v3.1 NVD
- 3.6 LOW
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N - CVSS v2.0 NVD
- 3.3 LOW
AV:L/AC:M/Au:N/C:P/I:P/A:N - EPSS
- 0.41% chance of exploitation in the next 30 days, 34th percentile
- Published
- 2020-11-28
- Updated
- 2026-10-08
Proof-of-concept exploits (1)
Security advisories
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17839856fd5…
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2045
- https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20210115-0002
- https://www.debian.org/security/2022/dsa-5096