Riskcovery

CVE-2021-47602

mac80211: track only QoS data frames for admission control

State
Published
Severity
Not scored
Published
Jun 19, 2024
Updated
May 11, 2026
Reserved
May 24, 2024

Read the record on cve.org

Description

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 02219b3abca59fca81711bfe7ee78df7abad97ce to before 69f054d6642c8f6173724ce17e7ee3ff66b8f682Affected
  • 02219b3abca59fca81711bfe7ee78df7abad97ce to before 46b9e29db2012a4d2a40a26101862e002ccf387bAffected
  • 02219b3abca59fca81711bfe7ee78df7abad97ce to before eed897a22230e3231a740eddd7d6d95ba476625fAffected
  • 02219b3abca59fca81711bfe7ee78df7abad97ce to before 42d08e97b196479f593499e887a9ab81446a34b9Affected
  • 02219b3abca59fca81711bfe7ee78df7abad97ce to before d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981aAffected
LinuxLinux
  • 3.19Affected
  • before 3.19Not affected
  • 4.19.222 through 4.19.*Not affected
  • 5.4.168 through 5.4.*Not affected
  • 5.10.88 through 5.10.*Not affected
  • 5.15.11 through 5.15.*Not affected
  • 5.16 and laterNot affected

References

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