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MitreCVE-2020-36387

HistoryJun 07, 2021 - 8:15 p.m.

CVE-2020-36387

2021-06-0720:15:08

CWE-416

mitre

web.nvd.nist.gov

linux

kernel

vulnerability

use-after-free

fs/io_uring.c

nvd

cve-2020-36387

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.3

Confidence

High

EPSS

Percentile

14.2%

JSON

An issue was discovered in the Linux kernel before 5.8.2. fs/io_uring.c has a use-after-free related to io_async_task_func and ctx reference holding, aka CID-6d816e088c35.

Affected configurations

Nvd

Node

linuxlinux_kernelRange5.7–5.7.16

linuxlinux_kernelRange5.8–5.8.2

Node

netapph300sMatch-

AND

netapph300s_firmwareMatch-

Node

netapph500s_firmwareMatch-

AND

netapph500sMatch-

Node

netapph700s_firmwareMatch-

AND

netapph700sMatch-

Node

netapph300e_firmwareMatch-

AND

netapph300eMatch-

Node

netapph500e_firmwareMatch-

AND

netapph500eMatch-

Node

netapph700e_firmwareMatch-

AND

netapph700eMatch-

Node

netapph410s_firmwareMatch-

AND

netapph410sMatch-

Node

netapph410c_firmwareMatch-

AND

netapph410cMatch-

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
netapph300s-cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
netapph300s_firmware-cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
netapph500s_firmware-cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
netapph500s-cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
netapph700s_firmware-cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
netapph700s-cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
netapph300e_firmware-cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
netapph300e-cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
netapph500e_firmware-cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
netapp	h300s	-	cpe:2.3:h:netapp:h300s:-:::::::*
netapp	h300s_firmware	-	cpe:2.3:o:netapp:h300s_firmware:-:::::::*
netapp	h500s_firmware	-	cpe:2.3:o:netapp:h500s_firmware:-:::::::*
netapp	h500s	-	cpe:2.3:h:netapp:h500s:-:::::::*
netapp	h700s_firmware	-	cpe:2.3:o:netapp:h700s_firmware:-:::::::*
netapp	h700s	-	cpe:2.3:h:netapp:h700s:-:::::::*
netapp	h300e_firmware	-	cpe:2.3:o:netapp:h300e_firmware:-:::::::*
netapp	h300e	-	cpe:2.3:h:netapp:h300e:-:::::::*
netapp	h500e_firmware	-	cpe:2.3:o:netapp:h500e_firmware:-:::::::*

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1-10 of 171

References

cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6d816e088c359866f9867057e04f244c608c42fe

security.netapp.com/advisory/ntap-20210727-0006/

sites.google.com/view/syzscope/kasan-use-after-free-read-in-io_async_task_func

syzkaller.appspot.com/bug?id=ce5f07d6ec3b5050b8f0728a3b389aa510f2591b

Social References

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.3

Confidence

High

EPSS

Percentile

14.2%

JSON

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