CVE-2026-93802

wifi: rsi: validate beacon length before fixed buffer copy

N/A

Published: September 24, 2026 at 04:02 PM UTC

Updated: October 3, 2026 at 11:17 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

N/A

Exploit prediction

EPSS 0.2%

Description

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.

Affected

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

Linux Kernel · Linux

95%

4.14 ≤ v < 5.10.2714.14 ≤ v < 5.15.2224.14 ≤ v < 6.1.1894.14 ≤ v < 6.12.1114.14 ≤ v < 6.18.534.14 ≤ v < 6.6.1584.14 ≤ v < 7.24.14d26a9559403c7c3ec3b430f5825bc22c3d40abdb

Vendor states this is fixed in 266f195d5a14eec6c482fd09fbc924584c3371a7 (fixed)

Vendor states this is fixed in 66a964432b2758a4cf69962366e37581d6e70632 (fixed)

Vendor states this is fixed in 795ba65f46fe44061f1195951c122cc8ec685d44 (fixed)

Vendor states this is fixed in 7f99742c3c2801f8033d8b7a0a58254d7f24fb1e (fixed)

Vendor states this is fixed in 87710ad633ce4588aec88611d0d0745eb33a6991 (fixed)

Vendor states this is fixed in 8ecdeb8b8a33b22c597299043c0dcfce50beb9ea (fixed)

Vendor states this is fixed in f08d7f3c916335a0e539f1c45c130615967fac47 (fixed)

Vendor states this is fixed in 4.14 (unaffected)

Vendor states this is fixed in 5.10.271 (unaffected)

Vendor states this is fixed in 5.15.222 (unaffected)

Vendor states this is fixed in 6.1.189 (unaffected)

Vendor states this is fixed in 6.12.111 (unaffected)