CVE-2026-74661

Last refreshed2026-10-15

Status: UPDATED | Advisory ID: CVE-2026-74661

Key Details

CVE	CVE-2026-74661
CVSS Score / Version	7.8 (High) / CVSS v3.1
Updated	2026-10-14
CVSS Vector	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`
CVSS Prose	attack vector is local; attack complexity is low; privileges required is low; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	Linux Kernel

Vendor	Product	Affected Versions	Patch Status
Linux	Linux Kernel

Vendor

Product

Affected Versions

Patch Status

Linux

Linux Kernel

Subsystems	OT Supporting Infrastructure
Sectors	All Sectors

In the Linux kernel, the following vulnerability has been resolved:

mac802154: fix netdev use-after-free in beacon worker

mac802154_beacon_worker() reads local->beacon_req under RCU and derives

the sub-interface from the request, but then drops the RCU read lock and

continues to use both sdata and the embedded wpan_dev.

mac802154_stop_beacons_locked() cancels only pending beacon work, clears

local->beacon_req and frees the request. A beacon worker that is already

running can therefore continue after interface teardown and dereference

the freed netdev private area.

The scan worker already pins the netdev before leaving RCU. Apply the

same lifetime rule to the beacon worker: take a netdev reference while

the request is still protected by RCU, and release it on all paths that

continue after the reference is acquired. (NVD)

Monitor Linux's web page for any future patch releases.

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-74661
CVE	https://www.cve.org/CVERecord?id=CVE-2026-74661

Source

Reference

NVD

CVE