CVE-2024-26779

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CVE-2024-26779

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

Details: 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.

References: 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://lists.debian.org/debian-lts-announce/2024/06/msg00017.html, https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html, https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26779.json, https://nvd.nist.gov/vuln/detail/CVE-2024-26779, https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git