CVE-2024-26653: linux kernel Double Free — Fix

Description

In the Linux kernel, the following vulnerability has been resolved: usb: misc: ljca: Fix double free in error handling path When auxiliary_device_add() returns error and then calls auxiliary_device_uninit(), callback function ljca_auxdev_release calls kfree(auxdev->dev.platform_data) to free the parameter data of the function ljca_new_client_device. The callers of ljca_new_client_device shouldn't call kfree() again in the error handling path to free the platform data. Fix this by cleaning up the redundant kfree() in all callers and adding kfree() the passed in platform_data on errors which happen before auxiliary_device_init() succeeds .

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CVSS v3.1 Score

7.8

HIGH

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

Weakness Type (CWE)

CWE-415 CWE-415

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.7 — 6.7.12
linux	linux_kernel	6.8 — 6.8.3
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/420babea4f1881a7c4ea22a8e218b8c6895d3f21 https://git.kernel.org/stable/c/7c9631969287a5366bc8e39cd5abff154b35fb80 https://git.kernel.org/stable/c/8a9f653cc852677003c23ee8075e3ed8fb4743c9 https://git.kernel.org/stable/c/420babea4f1881a7c4ea22a8e218b8c6895d3f21 https://git.kernel.org/stable/c/7c9631969287a5366bc8e39cd5abff154b35fb80 https://git.kernel.org/stable/c/8a9f653cc852677003c23ee8075e3ed8fb4743c9

Frequently Asked Questions

What is CVE-2024-26653? +

In the Linux kernel, the following vulnerability has been resolved: usb: misc: ljca: Fix double free in error handling path When auxiliary_device_add() returns error and then calls auxiliary_device_uninit(), callback function ljca_auxdev_release calls kfree(auxdev->dev.platform_data) to free the parameter data of the function ljca_new_client_device. The callers of ljca_new_client_device shouldn't call kfree() again in the error handling path to free the platform data. Fix this by cleaning up the redundant kfree() in all callers and adding kfree() the passed in platform_data on errors which happen before auxiliary_device_init() succeeds . It has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-26653? +

CVE-2024-26653 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-26653? +

CVE-2024-26653 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-26653? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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