CVE-2026-93802

medium

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.

References

https://git.kernel.org/stable/c/f08d7f3c916335a0e539f1c45c130615967fac47

https://git.kernel.org/stable/c/8ecdeb8b8a33b22c597299043c0dcfce50beb9ea

https://git.kernel.org/stable/c/87710ad633ce4588aec88611d0d0745eb33a6991

https://git.kernel.org/stable/c/7f99742c3c2801f8033d8b7a0a58254d7f24fb1e

https://git.kernel.org/stable/c/795ba65f46fe44061f1195951c122cc8ec685d44

https://git.kernel.org/stable/c/66a964432b2758a4cf69962366e37581d6e70632

https://git.kernel.org/stable/c/266f195d5a14eec6c482fd09fbc924584c3371a7

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-86189

Details

Source: Mitre, NVD

Published: 2026-09-24

Updated: 2026-10-03

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:L/AC:L/Au:M/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 4.4

Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00173