CVE-2020-29374 Privilege escalation in n/a

Low 3.6 Published Updated

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.

Weakness: CWE-863, CWE-362

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.

All Debian Debian Linux vulnerabilities

Sources

Also known as A-174737879, ASB-A-174737879, DEBIAN-CVE-2020-29374, GHSA-7jw3-9qpg-fmp6, UBUNTU-CVE-2020-29374.

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