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.
References
Link | Resource |
---|---|
http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html | Exploit Third Party Advisory VDB Entry |
https://bugs.chromium.org/p/project-zero/issues/detail?id=2045 | Exploit Issue Tracking Third Party Advisory |
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3 | Release Notes Third Party Advisory Vendor Advisory |
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17839856fd588f4ab6b789f482ed3ffd7c403e1f | Patch Vendor Advisory |
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html | Mailing List Third Party Advisory |
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html | Mailing List Third Party Advisory |
https://security.netapp.com/advisory/ntap-20210115-0002/ | Third Party Advisory |
https://www.debian.org/security/2022/dsa-5096 | Third Party Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: mitre
Published: 2020-11-28T06:18:56
Updated: 2022-03-10T02:06:28
Reserved: 2020-11-28T00:00:00
Link: CVE-2020-29374
JSON object: View
NVD Information
Status : Analyzed
Published: 2020-11-28T07:15:11.960
Modified: 2023-11-09T14:44:33.733
Link: CVE-2020-29374
JSON object: View
Redhat Information
No data.