Linux Distros Unpatched Vulnerability : CVE-2026-89625

high Nessus Plugin ID 345218

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- HID: sony: fix UAF of ghl_poke_timer / ghl_urb at driver unbind For GHL (Guitar Hero Live) dongles, sony_probe() arms a periodic timer: ghl_magic_poke() (the timer callback) submits sc->ghl_urb, and the URB completion ghl_magic_poke_cb() re-arms the timer with mod_timer(). sony_remove() drained the timer with timer_delete_sync() and then freed the URB with usb_free_urb(): timer_delete_sync(&sc->ghl_poke_timer);
usb_free_urb(sc->ghl_urb); timer_delete_sync() does not block re-arming, and while the URB is in flight the timer is not pending, so the sync delete is a no-op. A URB completion that runs after the delete re- arms the timer, and usb_free_urb() only drops a reference -- it does not kill an in-flight URB. sc is allocated with devm_kzalloc() and freed once sony_remove() returns, so the re-armed ghl_poke_timer (embedded in sc) then fires on freed memory, a use-after-free from timer softirq. This is a disconnect/rmmod race. Poison the URB first, then shut the timer down, before freeing the URB.
usb_poison_urb() kills any in-flight URB and permanently rejects further submissions, so a poke timer that is still pending cannot re-submit the URB from ghl_magic_poke() in the window before timer_shutdown_sync() runs. usb_kill_urb() would not suffice: it only cancels the in-flight URB and leaves it submittable once it returns, so the pending timer could re-submit it and put a fresh URB in flight over the freed sc.
timer_shutdown_sync() then drains any last callback and blocks re-arming. The probe error path is unaffected: it is only reached before the timer is armed. Reproduced under KASAN on next-20260710 via dummy_hcd + raw-gadget emulation of the GHL PS4 dongle (VID 0x1430 / PID 0x07bb): hid-sony binds and arms the poke timer, the poke URB is held in flight, the driver is unbound (freeing sc), then the URB is released. The completion re-arms the timer on the freed sc, and the re-armed timer fires ~8 s later: BUG:
KASAN: slab-use-after-free in ghl_magic_poke+0x98/0xb0 Read of size 8 at addr ffff88810b02fd50 by task swapper/0/0 ghl_magic_poke+0x98/0xb0 call_timer_fn+0x35/0x2b0 __run_timers+0x69c/0x9a0 run_timer_softirq+0x173/0x2a0 Allocated by task 169: sony_probe Freed by task 338: devres_release_group <- hid_device_remove (sony_remove) Found by 0sec (https://0sec.ai) using automated source analysis.
(CVE-2026-89625)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 345218

File Name: unpatched_CVE_2026_89625.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Misc.

Published: 9/12/2026

Updated: 9/12/2026

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.43

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.9

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

CVSS Score Source: CVE-2026-89625

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:debian:debian_linux:linux

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/11/2026

Reference Information

CVE: CVE-2026-89625

Detections

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