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[email protected]NVD:CVE-2021-41073

HistorySep 19, 2021 - 5:15 p.m.

CVE-2021-41073

2021-09-1917:15:07

CWE-763

[email protected]

web.nvd.nist.gov

cve-2021-41073

loop_rw_iter

fs/io_uring.c

ioring_op_provide_buffers

kernel buffer

/proc/<pid>/maps

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

EPSS

Percentile

5.1%

JSON

loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.

Affected configurations

Nvd

Node

linuxlinux_kernelRange5.10–5.10.68

linuxlinux_kernelRange5.11–5.14.7

Node

debiandebian_linuxMatch10.0

Node

fedoraprojectfedoraMatch33

fedoraprojectfedoraMatch34

Node

netappcloud_backupMatch-

netappsolidfire_baseboard_management_controllerMatch-

Node

netapph410cMatch-

AND

netapph410c_firmwareMatch-

Node

netapph300sMatch-

AND

netapph300s_firmwareMatch-

Node

netapph500sMatch-

AND

netapph500s_firmwareMatch-

Node

netapph700sMatch-

AND

netapph700s_firmwareMatch-

Node

netapph300e_firmwareMatch-

AND

netapph300eMatch-

Node

netapph500e_firmwareMatch-

AND

netapph500eMatch-

Node

netapph700eMatch-

AND

netapph700e_firmwareMatch-

Node

netapph410sMatch-

AND

netapph410s_firmwareMatch-

Node

netapph410cMatch-

AND

netapph410c_firmwareMatch-

VendorProductVersionCPE
linuxlinux_kernel*cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
debiandebian_linux10.0cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
fedoraprojectfedora33cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
fedoraprojectfedora34cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
netappcloud_backup-cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
netappsolidfire_baseboard_management_controller-cpe:2.3:a:netapp:solidfire_baseboard_management_controller:-:*:*:*:*:*:*:*
netapph410c-cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
netapph410c_firmware-cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
netapph300s-cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
netapph300s_firmware-cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
linux	linux_kernel	*	cpe:2.3:o:linux:linux_kernel::::::::
debian	debian_linux	10.0	cpe:2.3:o:debian:debian_linux:10.0:::::::*
fedoraproject	fedora	33	cpe:2.3:o:fedoraproject:fedora:33:::::::*
fedoraproject	fedora	34	cpe:2.3:o:fedoraproject:fedora:34:::::::*
netapp	cloud_backup	-	cpe:2.3:a:netapp:cloud_backup:-:::::::*
netapp	solidfire_baseboard_management_controller	-	cpe:2.3:a:netapp:solidfire_baseboard_management_controller:-:::::::*
netapp	h410c	-	cpe:2.3:h:netapp:h410c:-:::::::*
netapp	h410c_firmware	-	cpe:2.3:o:netapp:h410c_firmware:-:::::::*
netapp	h300s	-	cpe:2.3:h:netapp:h300s:-:::::::*
netapp	h300s_firmware	-	cpe:2.3:o:netapp:h300s_firmware:-:::::::*