CVE-2021-47602

In 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.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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

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

No history.

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

linux_kernel

CWE

CWE-824

Access of Uninitialized Pointer

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Para el control de admisi\u00f3n, obviamente todo eso solo funciona para frameworks de datos QoS; de lo contrario, ni siquiera podemos acceder al campo QoS en el encabezado. Syzbot inform\u00f3 (ver m\u00e1s abajo) un valor no inicializado aqu\u00ed 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 \u00fanicamente con los paquetes de datos QoS."}], "lastModified": "2024-11-21T06:36:38.737", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B0BC14FA-8634-4F5B-B7C6-F55C27A50523", "versionEndExcluding": "4.19.222", "versionStartIncluding": "3.19"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "195EBAA1-4CCE-4898-9351-F4A0DBCAA022", "versionEndExcluding": "5.4.168", "versionStartIncluding": "4.20"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A657B2D0-5B9D-42BE-A3BF-228DBC1B057C", "versionEndExcluding": "5.10.88", "versionStartIncluding": "5.5"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "11274E95-438A-449A-B100-01B2B0046669", "versionEndExcluding": "5.15.11", "versionStartIncluding": "5.11"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "357AA433-37E8-4323-BFB2-3038D6E4B414"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A73429BA-C2D9-4D0C-A75F-06A1CA8B3983"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F621B5E3-E99D-49E7-90B9-EC3B77C95383"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc4:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F7BFDCAA-1650-49AA-8462-407DD593F94F"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:5.16:rc5:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6EC9882F-866D-4ACB-8FBC-213D8D8436C8"}], "operator": "OR"}]}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"}