CVE-2020-29369

high
New! CVE Severity Now Using CVSS v3

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Description

An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.

References

http://www.openwall.com/lists/oss-security/2021/02/10/6

http://www.openwall.com/lists/oss-security/2021/02/19/8

https://bugs.chromium.org/p/project-zero/issues/detail?id=2056

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4c

https://security.netapp.com/advisory/ntap-20210115-0001/

Details

Source: MITRE

Published: 2020-11-28

Updated: 2021-02-24

Type: CWE-362

Risk Information

CVSS v2

Base Score: 6.9

Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 7

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1

Severity: HIGH

Tenable Plugins

View all (6 total)

IDNameProductFamilySeverity
147982Ubuntu 20.04 LTS : Linux kernel (OEM) vulnerabilities (USN-4752-1)NessusUbuntu Local Security Checks
high
146282openSUSE Security Update : RT kernel (openSUSE-2021-242)NessusSuSE Local Security Checks
high
144313openSUSE Security Update : the Linux Kernel (openSUSE-2020-2260)NessusSuSE Local Security Checks
medium
144143SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3764-1)NessusSuSE Local Security Checks
high
144101SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3748-1)NessusSuSE Local Security Checks
medium
143523openSUSE Security Update : the Linux Kernel (openSUSE-2020-2161)NessusSuSE Local Security Checks
medium