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CVE-2021-47602

mac80211: track only QoS data frames for admission control PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Linux / Linuxaffected 02219b3abca59fca81711bfe7ee78df7abad97ce before 69f054d6642c8f6173724ce17e7ee3ff66b8f682; affected 02219b3abca59fca81711bfe7ee78df7abad97ce before 46b9e29db2012a4d2a40a26101862e002ccf387b; affected 02219b3abca59fca81711bfe7ee78df7abad97ce before eed897a22230e3231a740eddd7d6d95ba476625f; affected 02219b3abca59fca81711bfe7ee78df7abad97ce before 42d08e97b196479f593499e887a9ab81446a34b9; affected 02219b3abca59fca81711bfe7ee78df7abad97ce before d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a
Linux / Linuxaffected 3.19; unaffected 0 before 3.19; unaffected 4.19.222 through 4.19.*; unaffected 5.4.168 through 5.4.*; unaffected 5.10.88 through 5.10.*; unaffected 5.15.11 through 5.15.*; unaffected 5.16 through *

CWE

No CWE identifiers supplied.

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.