# CVE-2021-47602: linux: In the Linux kernel, the following vulnerability has been resolved:  mac80211: track only QoS data frames for admissi...

CVE-2021-47602 is fixed in linux on 1 platform, first by DEBIAN-CVE-2021-47602, released June 19, 2024. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-47602
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0022
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 19, 2024

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | linux Debian 12.15 (bookworm) | 5.15.15-1 | [DEBIAN-CVE-2021-47602](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47602.md) | Jun 19, 2024 |
| Linux | linux Debian 13.5 (trixie) | 5.15.15-1 | [DEBIAN-CVE-2021-47602](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47602.md) | Jun 19, 2024 |
| Linux | linux Debian 14 | 5.15.15-1 | [DEBIAN-CVE-2021-47602](https://patchblox.com/security/data/fix/linux/debian-cve-2021-47602.md) | Jun 19, 2024 |

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