CVE-2021-47101

In the Linux kernel, the following vulnerability has been resolved: asix: fix uninit-value in asix_mdio_read() asix_read_cmd() may read less than sizeof(smsr) bytes and in this case smsr will be uninitialized. Fail log: BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] BUG: KMSAN: uninit-value in asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 BUG: KMSAN: uninit-value in asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497 asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] asix_check_host_enable drivers/net/usb/asix_common.c:82 [inline] drivers/net/usb/asix_common.c:497 asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.2

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03	Patch
https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56	Patch
https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03	Patch
https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc2::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc3::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc4::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc5::::::
	cpe:2.3:o:linux:linux_kernel:5.16:rc6::::::

History

03 Feb 2025, 14:02

Type	Values Removed	Values Added
First Time		Linux Linux linux Kernel
References	~~() https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03 -~~	() https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03 - Patch
References	~~() https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56 -~~	() https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56 - Patch
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.1
CPE		cpe:2.3:o:linux:linux_kernel:5.16:rc3:::::: cpe:2.3:o:linux:linux_kernel:5.16:rc6:::::: cpe:2.3:o:linux:linux_kernel:::::::: cpe:2.3:o:linux:linux_kernel:5.16:rc5:::::: cpe:2.3:o:linux:linux_kernel:5.16:rc4:::::: cpe:2.3:o:linux:linux_kernel:5.16:rc2:::::: cpe:2.3:o:linux:linux_kernel:5.16:rc1::::::
CWE		CWE-908

21 Nov 2024, 06:35

Type	Values Removed	Values Added
References	~~() https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03 -~~	() https://git.kernel.org/stable/c/8035b1a2a37a29d8c717ef84fca8fe7278bc9f03 -
References	~~() https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56 -~~	() https://git.kernel.org/stable/c/d259f621c85949f30cc578cac813b82bb5169f56 -

05 Mar 2024, 13:41

Type	Values Removed	Values Added
Summary		(es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: asix: corrige el valor uninit en asix_mdio_read() asix_read_cmd() puede leer menos que sizeof(smsr) bytes y en este caso smsr no estará inicializado. Registro de errores: ERROR: KMSAN: valor uninit en asix_check_host_enable drivers/net/usb/asix_common.c:82 [en línea] ERROR: KMSAN: valor uninit en asix_check_host_enable drivers/net/usb/asix_common.c:82 controladores [en línea] /net/usb/asix_common.c:497 ERROR: KMSAN: valor uninit en asix_mdio_read+0x3c1/0xb00 drivers/net/usb/asix_common.c:497 drivers/net/usb/asix_common.c:497 asix_check_host_enable drivers/net/ usb/asix_common.c:82 [en línea] controladores asix_check_host_enable/net/usb/asix_common.c:82 [en línea] controladores/net/usb/asix_common.c:497 controladores asix_mdio_read+0x3c1/0xb00/net/usb/asix_common.c :497 controladores/net/usb/asix_common.c:497

04 Mar 2024, 18:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2024-03-04 18:15

Updated : 2025-02-03 14:02

NVD link : CVE-2021-47101

Mitre link : CVE-2021-47101

CVE.ORG link : CVE-2021-47101

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-908

Use of Uninitialized Resource

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7.1 /10