CVE-2026-31763

Description

In the Linux kernel, the following vulnerability has been resolved: iio: gyro: mpu3050: Fix incorrect free_irq() variable The handler for the IRQ part of this driver is mpu3050->trig but, in the teardown free_irq() is called with handler mpu3050. Use correct IRQ handler when calling free_irq().

CVSS Details

CVSS Score

5.5

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* - VULNERABLE

Linux Kernel (mpu3050驱动模块启用版本)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

/*
 * PoC Concept: Triggering the free_irq mismatch in mpu3050 driver
 * This requires the hardware to be present and the driver loaded.
 */

#include <linux/module.h>
#include <linux/i2c.h>

// Hypothetical structure based on the vulnerability description
struct mpu3050 {
    struct iio_trigger *trig;
    // ... other fields
};

// Simulating the vulnerable remove function
static int vulnerable_remove(struct i2c_client *client)
{
    struct mpu3050 *mpu3050 = i2c_get_clientdata(client);

    // The vulnerability: free_irq is called with 'mpu3050' (device struct)
    // instead of 'mpu3050->trig' (the dev_id used during request_irq).
    // This mismatch causes the kernel to crash when attempting to free the IRQ.
    free_irq(client->irq, mpu3050);

    return 0;
}

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-31763
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-31763
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-31763/
[4] VulDB https://vuldb.com/cve/CVE-2026-31763
[5] https://git.kernel.org/stable/c/11f7cd960f05b3f06747abfdc4e56dd0d8b8a157
[6] https://git.kernel.org/stable/c/2821f7b62c5b3633c4923c7e4f742380897cd511
[7] https://git.kernel.org/stable/c/8001b42fbd5e510dced3a25665019982c99bc708
[8] https://git.kernel.org/stable/c/8631e755fc07b651b5d158cc3656ef76cc874068
[9] https://git.kernel.org/stable/c/a09171d3f23e13bccd3dc34863186707c6301071
[10] https://git.kernel.org/stable/c/ac1233397f4cfe55d71f6aa459b42c256c951531
[11] https://git.kernel.org/stable/c/edb11a1aef4011a4b7b22cc3c3396c6fe371f4a6
[12] https://git.kernel.org/stable/c/fdbe4b5268cd41f9953d25a67d139e47cac34519

Raw JSON Data

JSON

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