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 (6)
Core 6
Core References
Release Notes, Vendor Advisory x_refsource_misc
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.11
Patch, Vendor Advisory x_refsource_misc
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=246c320a8cfe0b11d81a4af38fa9985ef0cc9a4c
Exploit, Issue Tracking, Patch, Third Party Advisory x_refsource_misc
https://bugs.chromium.org/p/project-zero/issues/detail?id=2056
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210115-0001/
Mailing List, Patch, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/02/10/6
Mailing List, Patch, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2021/02/19/8
Scores
CVSS v3
7.0
EPSS
0.0008
EPSS Percentile
23.2%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-362
Status
published
Products (5)
linux/linux_kernel
4.20 - 5.4.54
netapp/hci_compute_node
netapp/hci_management_node
netapp/hci_storage_node
netapp/solidfire
Published
Nov 28, 2020
Tracked Since
Feb 18, 2026