5.5

CVE-2021-47602

mac80211: track only QoS data frames for admission control

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 3.19 < 4.19.222
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.168
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.88
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.11
Linux ≫ Linux Kernel Version5.16 Updaterc1
Linux ≫ Linux Kernel Version5.16 Updaterc2
Linux ≫ Linux Kernel Version5.16 Updaterc3
Linux ≫ Linux Kernel Version5.16 Updaterc4
Linux ≫ Linux Kernel Version5.16 Updaterc5
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.22% 0.126
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-824 Access of Uninitialized Pointer

The product accesses or uses a pointer that has not been initialized.

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