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…
Does this matter?
Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.22% probability · 13th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-824
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9Patch
- https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387bPatch
- https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682Patch
- https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981aPatch
- https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625fPatch
- https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9Patch
- https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387bPatch
- https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682Patch
- https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981aPatch
- https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625fPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.