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CVE-2026-93802

wifi: rsi: validate beacon length before fixed buffer copy

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.111, and 1 more
None on Exploit-DB, Metasploit or GitHub

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: validate beacon length before fixed buffer copy rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment. Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.

Timeline

  1. CVE published
  2. Record last updated

Affected versions

  • Linux Linux

    From d26a9559403c7c3ec3b430f5825bc22c3d40abdb · fixed in 795ba65f46fe44061f1195951c122cc8ec685d44; From d26a9559403c7c3ec3b430f5825bc22c3d40abdb · fixed in 66a964432b2758a4cf69962366e37581d6e70632; From d26a9559403c7c3ec3b430f5825bc22c3d40abdb · fixed in 7f99742c3c2801f8033d8b7a0a58254d7f24fb1e; From d26a9559403c7c3ec3b430f5825bc22c3d40abdb · fixed in f08d7f3c916335a0e539f1c45c130615967fac47; From d26a9559403c7c3ec3b430f5825bc22c3d40abdb · fixed in 87710ad633ce4588aec88611d0d0745eb33a6991; From d26a9559403c7c3ec3b430f5825bc22c3d40abdb · fixed in 266f195d5a14eec6c482fd09fbc924584c3371a7; From d26a9559403c7c3ec3b430f5825bc22c3d40abdb · fixed in 8ecdeb8b8a33b22c597299043c0dcfce50beb9ea

  • Linux Linux

    4.14

  • KernelLinux

    From 4.14.0 · fixed in 5.10.271; From 5.11.0 · fixed in 5.15.222; From 5.16.0 · fixed in 6.1.189; From 6.2.0 · fixed in 6.6.158; From 6.7.0 · fixed in 6.12.111; From 6.13.0 · fixed in 6.18.53

References 7

git.kernel.org