mac80211: track only QoS data frames for admission control (Linux Linux)

CVE-2021-47602
MEDIUM 5.5

At a glance

Source
NVD
EPSS
EPSS 0.22 % · percentile 13 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Modified

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.

Weaknesses (CWE)

  • CWE-824 — Access of Uninitialized Pointer

References

Scores

VersionScoreVectorScored by
CVSS 3.1MEDIUM 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HNVD · nvd@nist.gov (Primary)

European references

CERT-FR advisories

Affected configurations (NVD CPE)

Affected products

ProductVersions
Linux · Linuxaffected 02219b3abca59fca81711bfe7ee78df7abad97ce < 69f054d6642c8f6173724ce17e7ee3ff66b8f682 ; affected 02219b3abca59fca81711bfe7ee78df7abad97ce < 46b9e29db2012a4d2a40a26101862e002ccf387b ; affected 02219b3abca59fca81711bfe7ee78df7abad97ce < eed897a22230e3231a740eddd7d6d95ba476625f ; affected 02219b3abca59fca81711bfe7ee78df7abad97ce < 42d08e97b196479f593499e887a9ab81446a34b9 ; affected 02219b3abca59fca81711bfe7ee78df7abad97ce < d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a
Linux · Linuxaffected 3.19 ; unaffected 0 < 3.19 ; unaffected 4.19.222 ≤ 4.19.* ; unaffected 5.4.168 ≤ 5.4.* ; unaffected 5.10.88 ≤ 5.10.* ; unaffected 5.15.11 ≤ 5.15.*

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD