CVE-2020-29374

low-risk

Published 2020-11-28

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.

Do I need to act?

0.02% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 3.6/10 Low

LOCAL / HIGH complexity

Affected Products (9)

Linux Kernel

Debian Linux

500F Firmware

A250 Firmware

H410C Firmware

Solidfire \& Hci Management Node

Solidfire \& Hci Storage Node

Hci Compute Node Bios

Affected Vendors

Debian Linux Netapp

References (18)

Exploit http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LS...

Exploit https://bugs.chromium.org/p/project-zero/issues/detail?id=2045

Release Notes https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3

Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17...

Mailing List https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html

Mailing List https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html

Mailing List https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html

Third Party Advisory https://security.netapp.com/advisory/ntap-20210115-0002/

Third Party Advisory https://www.debian.org/security/2022/dsa-5096