CVE-2020-29372 Race condition in n/a

What is CVE-2020-29372?

CVE-2020-29372 is a medium-severity vulnerability in Canonical Ubuntu 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 do_madvise in mm/madvise.c in the Linux kernel before 5.6.8. There is a race condition between coredump operations and the IORING_OP_MADVISE implementation, aka CID-bc0c4d1e176e.

Weakness: CWE-362

Which versions are affected by CVE-2020-29372?

It affects 2 products.

Products include Canonical Ubuntu Linux, Linux kernel.

How do I fix CVE-2020-29372?

Apply the vendor's patch.

Is CVE-2020-29372 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-29372 exists.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2020-29372, GHSA-w2fw-m3gj-2pvm, UBUNTU-CVE-2020-29372.