CVE-2020-29368

HighCVSS 7.0/10Last modified Jun 17, 2026

Description

An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.

Metrics

CVSS 3.1 7.0/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-362

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://bugs.chromium.org/p/project-zero/issues/detail?id=2045Exploit, Issue Tracking, Patch, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c444eb564fb16645c172d550359cb3d75fe8a040Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210108-0002/Third Party Advisory
https://bugs.chromium.org/p/project-zero/issues/detail?id=2045Exploit, Issue Tracking, Patch, Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.5Release Notes, Vendor Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c444eb564fb16645c172d550359cb3d75fe8a040Patch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20210108-0002/Third Party Advisory

Timeline

Published: Nov 28, 2020
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

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