CVE-2024-26779: wifi: mac80211: fix race condition on enabling fast-xmit
First published: Wed Apr 03 2024(Updated: )
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.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Kernel | <4.19.308 | |
| Linux Kernel | >=4.20<5.4.270 | |
| Linux Kernel | >=5.5<5.10.211 | |
| Linux Kernel | >=5.11<5.15.150 | |
| Linux Kernel | >=5.16<6.1.80 | |
| Linux Kernel | >=6.2<6.6.19 | |
| Linux Kernel | >=6.7<6.7.7 | |
| Linux Kernel | =6.8-rc1 | |
| Debian Linux | =10.0 | |
| IBM Security Verify Governance - Identity Manager | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Software Stack | <=ISVG 10.0.2 | |
| IBM Security Verify Governance, Identity Manager Virtual Appliance | <=ISVG 10.0.2 | |
| IBM Security Verify Governance Identity Manager Container | <=ISVG 10.0.2 | |
| redhat/kernel | <4.19.308 | 4.19.308 |
| redhat/kernel | <5.4.270 | 5.4.270 |
| redhat/kernel | <5.10.211 | 5.10.211 |
| redhat/kernel | <5.15.150 | 5.15.150 |
| redhat/kernel | <6.1.80 | 6.1.80 |
| redhat/kernel | <6.6.19 | 6.6.19 |
| redhat/kernel | <6.7.7 | 6.7.7 |
| redhat/kernel | <6.8 | 6.8 |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.135-1 6.12.22-1 6.12.25-1 |
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Reference Links
- https://git.kernel.org/stable/c/281280276b70c822f55ce15b661f6d1d3228aaa9
- https://git.kernel.org/stable/c/54b79d8786964e2f840e8a2ec4a9f9a50f3d4954
- https://git.kernel.org/stable/c/5ffab99e070b9f8ae0cf60c3c3602b84eee818dd
- https://git.kernel.org/stable/c/76fad1174a0cae6fc857b9f88b261a2e4f07d587
- https://git.kernel.org/stable/c/85720b69aef177318f4a18efbcc4302228a340e5
- https://git.kernel.org/stable/c/88c18fd06608b3adee547102505d715f21075c9d
- https://git.kernel.org/stable/c/bcbc84af1183c8cf3d1ca9b78540c2185cd85e7f
- https://git.kernel.org/stable/c/eb39bb548bf974acad7bd6780fe11f9e6652d696
- https://launchpad.net/bugs/cve/CVE-2024-26779
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://www.ibm.com/support/pages/node/7230443 (Advisory)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26779
- https://nvd.nist.gov/vuln/detail/CVE-2024-26779
- https://security-tracker.debian.org/tracker/CVE-2024-26779
- https://ubuntu.com/security/CVE-2024-26779
- https://git.kernel.org/linus/bcbc84af1183c8cf3d1ca9b78540c2185cd85e7f
- https://access.redhat.com/security/cve/CVE-2024-26779
- https://lore.kernel.org/linux-cve-announce/2024040310-CVE-2024-26779-8030@gregkh/T
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2273224
- https://access.redhat.com/errata/RHSA-2024:3618
- https://access.redhat.com/errata/RHSA-2024:3627
- https://access.redhat.com/errata/RHSA-2025:3935
- https://bugzilla.redhat.com/show_bug.cgi?id=2273223
Frequently Asked Questions
What is the severity of CVE-2024-26779?
CVE-2024-26779 is considered to be of medium severity due to the potential impact of a race condition in the Linux kernel's wifi mac80211 module.
How do I fix CVE-2024-26779?
To fix CVE-2024-26779, upgrade to the latest kernel versions provided by your distribution that includes the patch for this vulnerability.
What versions of the Linux kernel are affected by CVE-2024-26779?
CVE-2024-26779 affects various versions of the Linux kernel up to 6.8, specifically versions 4.19.308, 5.4.270, 5.10.211, 5.15.150, 6.1.80, 6.6.19, 6.7.7, and 6.12.11.
When was CVE-2024-26779 resolved?
CVE-2024-26779 was resolved in recent updates released in 2024.
What components are involved in CVE-2024-26779?
CVE-2024-26779 involves a race condition in the mac80211 module used for managing Wi-Fi within the Linux kernel.
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