High 8.8Published May 1, 2024

CVE-2024-27053wifi: wilc1000: fix RCU usage in connect path

Updated under an hour ago (Oct 28, 2026, 7:10 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: fix RCU usage in connect path With lockdep enabled, calls to the connect function from cfg802.11 layer lead to the following warning: ============================= WARNING: suspicious RCU usage 6.7.0-rc1-wt+ #333 Not tainted ----------------------------- drivers/net/wireless/microchip/wilc1000/hif.c:386 suspicious rcu_dereference_check() usage! [...] stack backtrace: CPU: 0 PID: 100 Comm: wpa_supplicant Not tainted 6.7.0-rc1-wt+ #333 Hardware name: Atmel SAMA5 unwind_backtrace from show_stack+0x18/0x1c show_stack from dump_stack_lvl+0x34/0x48 dump_stack_lvl from wilc_parse_join_bss_param+0x7dc/0x7f4 wilc_parse_join_bss_param from connect+0x2c4/0x648 connect from cfg80211_connect+0x30c/0xb74 cfg80211_connect from nl80211_connect+0x860/0xa94 nl80211_connect from genl_rcv_msg+0x3fc/0x59c genl_rcv_msg from netlink_rcv_skb+0xd0/0x1f8 netlink_rcv_skb from genl_rcv+0x2c/0x3c genl_rcv from netlink_unicast+0x3b0/0x550 netlink_unicast from netlink_sendmsg+0x368/0x688 netlink_sendmsg from ____sys_sendmsg+0x190/0x430 ____sys_sendmsg from ___sys_sendmsg+0x110/0x158 ___sys_sendmsg from sys_sendmsg+0xe8/0x150 sys_sendmsg from ret_fast_syscall+0x0/0x1c This warning is emitted because in the connect path, when trying to parse target BSS parameters, we dereference a RCU pointer whithout being in RCU critical section. Fix RCU dereference usage by moving it to a RCU read critical section. To avoid wrapping the whole wilc_parse_join_bss_param under the critical section, just use the critical section to copy ies data

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-476
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 14, 2026
First seen by InfoSec Signals: Oct 14, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from c460495ee072fc01a9b1e8d72c179510418cafac before e556006de4ea93abe2b46cba202a2556c544b8b2; from c460495ee072fc01a9b1e8d72c179510418cafac before b4bbf38c350acb6500cbe667b1e2e68f896e4b38; from c460495ee072fc01a9b1e8d72c179510418cafac before d80fc436751cfa6b02a8eda74eb6cce7dadfe5a2; from c460495ee072fc01a9b1e8d72c179510418cafac before 745003b5917b610352f52fe0d11ef658d6471ec2; from c460495ee072fc01a9b1e8d72c179510418cafac before 4bfd20d5f5c62b5495d6c0016ee6933bd3add7ce; from c460495ee072fc01a9b1e8d72c179510418cafac before 5800ec78775c0cd646f71eb9bf8402fb794807de; from c460495ee072fc01a9b1e8d72c179510418cafac before dd50d3ead6e3707bb0a5df7cc832730c93ace3a7; from c460495ee072fc01a9b1e8d72c179510418cafac before 205c50306acf58a335eb19fa84e40140f4fe814f	CNA record
linux linux_kernel linux:linux_kernel	from c460495ee072 before e556006de4ea	CISA ADP
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	before V1.1.1	CISA ADP
linux linux_kernel linux:linux_kernel	from 5.1 before 5.4.273; from 5.5 before 5.10.214; from 5.11 before 5.15.153; from 5.16 before 6.1.83; from 6.2 before 6.6.23; from 6.7 before 6.7.11; from 6.8 before 6.8.2	NVD
debian debian_linux debian:debian_linux	10.0	NVD

References

References

https://git.kernel.org/stable/c/e556006de4ea93abe2b46cba202a2556c544b8b2	patch
https://git.kernel.org/stable/c/b4bbf38c350acb6500cbe667b1e2e68f896e4b38	patch
https://git.kernel.org/stable/c/d80fc436751cfa6b02a8eda74eb6cce7dadfe5a2	patch
https://git.kernel.org/stable/c/745003b5917b610352f52fe0d11ef658d6471ec2	patch
https://git.kernel.org/stable/c/4bfd20d5f5c62b5495d6c0016ee6933bd3add7ce	patch
https://git.kernel.org/stable/c/5800ec78775c0cd646f71eb9bf8402fb794807de	patch
https://git.kernel.org/stable/c/dd50d3ead6e3707bb0a5df7cc832730c93ace3a7	patch
https://git.kernel.org/stable/c/205c50306acf58a335eb19fa84e40140f4fe814f	patch
https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html	mailing-list, third-party-advisory
https://cert-portal.siemens.com/productcert/html/ssa-265688.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.