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nvd[email protected]NVD:CVE-2020-29368
HistoryNov 28, 2020 - 7:15 a.m.

CVE-2020-29368

2020-11-2807:15:11
CWE-362
[email protected]
web.nvd.nist.gov
5
linux kernel
issue
split_huge_pmd
memory
race condition
thp mapcount
unintended write access
cve-2020-29368
cid-c444eb564fb1

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.2

Confidence

High

EPSS

0.001

Percentile

34.4%

JSON

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.

Affected configurations

Nvd
Node
linuxlinux_kernelRange4.5.5–4.9.228
OR
linuxlinux_kernelRange4.10–4.14.185
OR
linuxlinux_kernelRange4.15–4.19.129
OR
linuxlinux_kernelRange4.20–5.4.48
OR
linuxlinux_kernelRange5.5–5.7.5
Node
netappcloud_backupMatch-
OR
netappelement_softwareMatch-
OR
netapphci_management_nodeMatch-
OR
netappsolidfireMatch-
Node
netapphci_compute_nodeMatch-
AND
netapphci_bootstrap_osMatch-
Node
netapph410cMatch-
AND
netapph410c_firmwareMatch-

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CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.2

Confidence

High

EPSS

0.001

Percentile

34.4%

JSON
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