CVE-2024-26779

wifi: mac80211: fix race condition on enabling fast-xmit

HIGH

8.8

CVSS Score

Published: April 3, 2024 at 05:01 PM UTC

Updated: August 5, 2026 at 12:04 PM UTC

2 products affected across 2 vendorsLinux KernelDebian Linux

Using Linux by Linux?

Get instant alerts when new vulnerabilities affect Linux - before attackers find them.

Real-time alertsTrack your software stackFree plan available

Start Free Sign In

Severity

HIGH8.8

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: fix race condition on enabling fast-xmit fast-xmit must only be enabled after the sta has been uploaded to the driver, otherwise it could end up passing the not-yet-uploaded sta via drv_tx calls to the driver, leading to potential crashes because of uninitialized drv_priv data. Add a missing sta->uploaded check and re-check fast xmit after inserting a sta.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

10.0

Linux Kernel · Linux

95%

v < 4.19.3084.2 ≤ v < 4.19.3084.2 ≤ v < 5.10.2114.2 ≤ v < 5.15.1504.2 ≤ v < 5.4.2704.2 ≤ v < 6.1.804.2 ≤ v < 6.6.194.2 ≤ v < 6.7.74.2 ≤ v < 6.84.20 ≤ v < 5.4.2705.11 ≤ v < 5.15.1505.16 ≤ v < 6.1.805.5 ≤ v < 5.10.2116.2 ≤ v < 6.6.196.7 ≤ v < 6.7.717c18bf880b2464851e5a2bca86521affc46c97e6.8 rc1

Vendor states this is fixed in 281280276b70c822f55ce15b661f6d1d3228aaa9 (fixed)

Vendor states this is fixed in 54b79d8786964e2f840e8a2ec4a9f9a50f3d4954 (fixed)

Vendor states this is fixed in 5ffab99e070b9f8ae0cf60c3c3602b84eee818dd (fixed)

Vendor states this is fixed in 76fad1174a0cae6fc857b9f88b261a2e4f07d587 (fixed)

Vendor states this is fixed in 85720b69aef177318f4a18efbcc4302228a340e5 (fixed)

Vendor states this is fixed in 88c18fd06608b3adee547102505d715f21075c9d (fixed)

Vendor states this is fixed in bcbc84af1183c8cf3d1ca9b78540c2185cd85e7f (fixed)

Vendor states this is fixed in eb39bb548bf974acad7bd6780fe11f9e6652d696 (fixed)

Vendor states this is fixed in 4.19.308 (unaffected)

Vendor states this is fixed in 4.2 (unaffected)

Vendor states this is fixed in 5.10.211 (unaffected)

Vendor states this is fixed in 5.15.150 (unaffected)

Vendor states this is fixed in 5.4.270 (unaffected)

Vendor states this is fixed in 6.1.80 (unaffected)

Vendor states this is fixed in 6.6.19 (unaffected)

Vendor states this is fixed in 6.7.7 (unaffected)

Vendor states this is fixed in 6.8 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references