CVE-2026-93802

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxd26a9559403c7c3ec3b430f5825bc22c3d40abdb < 795ba65f46fe44061f1195951c122cc8ec685d44affected
LinuxLinuxd26a9559403c7c3ec3b430f5825bc22c3d40abdb < 66a964432b2758a4cf69962366e37581d6e70632affected
LinuxLinuxd26a9559403c7c3ec3b430f5825bc22c3d40abdb < 7f99742c3c2801f8033d8b7a0a58254d7f24fb1eaffected
LinuxLinuxd26a9559403c7c3ec3b430f5825bc22c3d40abdb < f08d7f3c916335a0e539f1c45c130615967fac47affected
LinuxLinuxd26a9559403c7c3ec3b430f5825bc22c3d40abdb < 87710ad633ce4588aec88611d0d0745eb33a6991affected
LinuxLinuxd26a9559403c7c3ec3b430f5825bc22c3d40abdb < 266f195d5a14eec6c482fd09fbc924584c3371a7affected
LinuxLinuxd26a9559403c7c3ec3b430f5825bc22c3d40abdb < 8ecdeb8b8a33b22c597299043c0dcfce50beb9eaaffected
LinuxLinux4.14affected
LinuxLinux0 < 4.14unaffected
LinuxLinux5.10.271 <= 5.10.*unaffected
LinuxLinux5.15.222 <= 5.15.*unaffected
LinuxLinux6.1.189 <= 6.1.*unaffected
LinuxLinux6.6.158 <= 6.6.*unaffected
LinuxLinux6.12.111 <= 6.12.*unaffected
LinuxLinux6.18.53 <= 6.18.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References