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Review reviewHigh

CVE-2024-26779

Linux Linux, linux kernel, debian linux

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.

CVSS
8.8
EPSS
0.28%
20.1% percentile
CISA KEV
Not listed
Published
2024.04.04
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.28%
Technical severityCVSS 8.8

Vulnerability overview

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 product and versions

Product
Linux Linux, linux kernel, debian linux
Affected versions
>= 17c18bf880b2464851e5a2bca86521affc46c97e < 76fad1174a0cae6fc857b9f88b261a2e4f07d587, >= 17c18bf880b2464851e5a2bca86521affc46c97e < 85720b69aef177318f4a18efbcc4302228a340e5, >= 17c18bf880b2464851e5a2bca86521affc46c97e < 5ffab99e070b9f8ae0cf60c3c3602b84eee818dd, >= 17c18bf880b2464851e5a2bca86521affc46c97e < 88c18fd06608b3adee547102505d715f21075c9d, >= 17c18bf880b2464851e5a2bca86521affc46c97e < eb39bb548bf974acad7bd6780fe11f9e6652d696, >= 17c18bf880b2464851e5a2bca86521affc46c97e < 54b79d8786964e2f840e8a2ec4a9f9a50f3d4954, >= 17c18bf880b2464851e5a2bca86521affc46c97e < 281280276b70c822f55ce15b661f6d1d3228aaa9, >= 17c18bf880b2464851e5a2bca86521affc46c97e < bcbc84af1183c8cf3d1ca9b78540c2185cd85e7f, >= 4.2, < 4.19.308, >= 4.20 < 5.4.270, >= 5.5 < 5.10.211, >= 5.11 < 5.15.150, >= 5.16 < 6.1.80, >= 6.2 < 6.6.19, >= 6.7 < 6.7.7, 6.8, 10.0
Fixed versions
4.19.308, 5.4.270, 5.10.211, 5.15.150, 6.1.80, 6.6.19, 6.7.7

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux Linux, linux kernel, debian linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-362