CVE-2021-47602

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  2. Vulnerabilities (CVE)
  3. CVE-2021-47602

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

I

n the Linux kernel, the following vulnerability has been resolved: mac80211: track only QoS data frames for admission control For admission control, obviously all of that only works for QoS data frames, otherwise we cannot even access the QoS field in the header. Syzbot reported (see below) an uninitialized value here due to a status of a non-QoS nullfunc packet, which isn't even long enough to contain the QoS header. Fix this to only do anything for QoS data packets.

References
Link Resource
https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9 Patch
https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b Patch
https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682 Patch
https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a Patch
https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f Patch
https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9 Patch
https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b Patch
https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682 Patch
https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a Patch
https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*
History

21 Nov 2024, 06:36

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9 - Patch () https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9 - Patch
References () https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b - Patch () https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b - Patch
References () https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682 - Patch () https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682 - Patch
References () https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a - Patch () https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a - Patch
References () https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f - Patch () https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f - Patch

31 Oct 2024, 13:41

Type Values Removed Values Added
First Time Linux
Linux linux Kernel
CPE cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*
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:rc2:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
CWE CWE-824
References () https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9 - () https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9 - Patch
References () https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b - () https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b - Patch
References () https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682 - () https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682 - Patch
References () https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a - () https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a - Patch
References () https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f - () https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625f - Patch

20 Jun 2024, 12:43

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se resolvió la siguiente vulnerabilidad: mac80211: rastrea solo frameworks de datos QoS para control de admisión. Para el control de admisión, obviamente todo eso solo funciona para frameworks de datos QoS; de lo contrario, ni siquiera podemos acceder al campo QoS en el encabezado. Syzbot informó (ver más abajo) un valor no inicializado aquí debido al estado de un paquete nullfunc sin QoS, que ni siquiera es lo suficientemente largo para contener el encabezado de QoS. Solucione este problema para hacer algo únicamente con los paquetes de datos QoS.

19 Jun 2024, 15:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-06-19 15:15

Updated : 2024-11-21 06:36

NVD link : CVE-2021-47602

Mitre link : CVE-2021-47602

CVE.ORG link : CVE-2021-47602

JSON object : View

Products Affected

linux

CWE
CWE-824

Access of Uninitialized Pointer