CVE-2026-64362

Analyzed Analyzed - Analysis Complete

Use-After-Free in Linux Kernel HID lg-g15 Driver

Publication date: 2026-07-25

Last updated on: 2026-09-04

Assigner: kernel.org

Description

In the Linux kernel, the following vulnerability has been resolved: HID: lg-g15: cancel pending work on remove to fix a use-after-free lg_g15_data is allocated with devm and holds a work item. The report handlers schedule that work straight from device input. lg_g15_event() and lg_g15_v2_event() do it on the backlight cycle key, and lg_g510_leds_event() does it too. The worker dereferences the lg_g15_data back through container_of. The driver had no remove callback and never cancelled the work. So if a report scheduled the work and the keyboard was then unplugged, devres freed lg_g15_data while the work was still pending or running, and the worker touched freed memory. This is a use-after-free. It is reachable as a race on device unplug. Add a remove callback that cancels the work before devres frees the state. g15->work is only initialized for the models that schedule it (G15, G15 v2, G510). The G13 and Z-10 leave it zeroed, so guard the cancel on g15->work.func to avoid cancelling a work that was never set up. The g15 NULL test mirrors the one already in lg_g15_raw_event().

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-25

Last Modified

2026-09-04

Generated

2026-09-24

AI Q&A

2026-07-25

EPSS Evaluated

2026-09-23

NVD

CVE-2026-64362

EUVD

EUVD-2026-48906

Affected Vendors & Products

Vendor	Product	Version / Range
linux	linux_kernel	From 5.11 (inc) to 5.15.212 (exc)
linux	linux_kernel	From 5.16 (inc) to 6.1.178 (exc)
linux	linux_kernel	From 6.2 (inc) to 6.6.145 (exc)
linux	linux_kernel	From 6.7 (inc) to 6.12.96 (exc)
linux	linux_kernel	From 6.13 (inc) to 6.18.39 (exc)
linux	linux_kernel	From 6.19 (inc) to 7.1.4 (exc)
linux	linux_kernel	7.2
linux	linux_kernel	7.2
linux	linux_kernel	From 5.5 (inc) to 5.10.261 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This is a use-after-free vulnerability in the Linux kernel's HID driver for Logitech G15 keyboards. The driver allocates memory for device state and schedules work items without properly cleaning them up during device removal. If a keyboard is unplugged while a work item is pending or running, the memory is freed but the work item may still try to access it, causing a use-after-free condition.

Detection Guidance

This vulnerability is specific to the Linux kernel's HID driver for Logitech G15/G510 keyboards. Detection requires checking if the affected driver is loaded and if the system is running a vulnerable kernel version. Inspect loaded kernel modules with 'lsmod | grep lg_g15' and check kernel version with 'uname -r'. If the module is loaded on a vulnerable kernel, the system is potentially affected.

Impact Analysis

This vulnerability could allow an attacker with physical access to a vulnerable system to trigger a use-after-free condition by unplugging a Logitech G15 keyboard at a specific moment. This might lead to system crashes, data corruption, or potentially privilege escalation if exploited.

Compliance Impact

This vulnerability is a use-after-free issue in the Linux kernel's HID driver for certain keyboards. It does not directly relate to data privacy or security standards like GDPR or HIPAA, as it involves a hardware driver use-after-free rather than data handling or exposure.

Mitigation Strategies

Apply the latest kernel update from your distribution to patch the vulnerability. If immediate patching is not possible, unload the lg_g15 module with 'modprobe -r lg_g15' to prevent the use-after-free condition. Avoid unplugging the keyboard while it is in use to reduce exposure to the race condition.

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