01 Record

CVE-2022-49416

wifi: mac80211: fix use-after-free in chanctx code

HighPUBLISHEDCNA: Linux

CNA base score8.8 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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02 Description

wifi: mac80211: fix use-after-free in chanctx code

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.33% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 26.6% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-08-04.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2025-02-26 02:12Z1 YR AGO

Last updated

2026-08-05 08:55Z2 MO AGO

Reserved

2025-02-26

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant

Data version

5.2

Document digest

79954771dfd5c90965dba56e08209306a34ec800c7427a44906c5de888f2e742

05 Affected products

VendorProductVersionsPlatforms

LinuxLinux5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < 88cc8f963febe192d6ded9df7217f92f380b449a, 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < 4ba81e794f0fad6234f644c2da1ae14d5b95e1c4, 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < 9f1e5cc85ad77e52f54049a94db0407445ae2a34, 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < 265bec4779a38b65e86a25120370f200822dfa76, 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < 6118bbdf69f4718b02d26bbcf2e497eb66004331, 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < b79110f2bf6022e60e590d2e094728a8eec3e79e, 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < 82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c, 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < 4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c, 5bcae31d9cb1ebfad3ad5a3eea04c8cdc329a04f to < 2965c4cdf7ad9ce0796fac5e57debb9519ea721e, 3.17—

06 References

git.kernel.orghttps://git.kernel.org/stable/c/88cc8f963febe192d6ded9df7217f92f380b449a
git.kernel.orghttps://git.kernel.org/stable/c/4ba81e794f0fad6234f644c2da1ae14d5b95e1c4
git.kernel.orghttps://git.kernel.org/stable/c/9f1e5cc85ad77e52f54049a94db0407445ae2a34
git.kernel.orghttps://git.kernel.org/stable/c/265bec4779a38b65e86a25120370f200822dfa76
git.kernel.orghttps://git.kernel.org/stable/c/6118bbdf69f4718b02d26bbcf2e497eb66004331
git.kernel.orghttps://git.kernel.org/stable/c/b79110f2bf6022e60e590d2e094728a8eec3e79e
git.kernel.orghttps://git.kernel.org/stable/c/82c8e7bbdd06c7ed58e22450cc5b37f33a25bb2c
git.kernel.orghttps://git.kernel.org/stable/c/4f05a9e15edcdf5b97e0d86ab6ecd5f187289f6c
git.kernel.orghttps://git.kernel.org/stable/c/2965c4cdf7ad9ce0796fac5e57debb9519ea721e

07 Fixed in

Debian 12

linux
Fixed in 5.18.5-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 5.18.5-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 5.18.5-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.