CVE-2020-29374 Privilege escalation in n/a
A flaw in the Linux kernel's get_user_pages implementation allows unintended write access during copy-on-write operations, enabling local privilege escalation.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-29374?
CVE-2020-29374 is a low-severity vulnerability in Debian Debian Linux, published on 28 Nov 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2020-29374?
It affects 8 products.
Products include Debian Debian Linux, Linux kernel, Netapp 500f Firmware, Netapp A250 Firmware, Netapp H410c Firmware, Netapp Hci Compute Node Bios and 2 more.
How do I fix CVE-2020-29374?
Upgrade to a fixed version.
Is CVE-2020-29374 being exploited?
There is no known exploitation of CVE-2020-29374 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as A-174737879, ASB-A-174737879, DEBIAN-CVE-2020-29374, GHSA-7jw3-9qpg-fmp6, UBUNTU-CVE-2020-29374.