#VU102122 NULL pointer dereference in Linux kernel - CVE-2024-56670

Vulnerability identifier: #VU102122

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-56670

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the gs_start_io() function in drivers/usb/gadget/function/u_serial.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 6.12 - 6.12.5

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External links
https://git.kernel.org/stable/c/1247e1df086aa6c17ab53cd1bedce70dd7132765
https://git.kernel.org/stable/c/28b3c03a6790de1f6f2683919ad657840f0f0f58
https://git.kernel.org/stable/c/4cfbca86f6a8b801f3254e0e3c8f2b1d2d64be2b
https://git.kernel.org/stable/c/4efdfdc32d8d6307f968cd99f1db64468471bab1
https://git.kernel.org/stable/c/8ca07a3d18f39b1669927ef536e485787e856df6
https://git.kernel.org/stable/c/c83213b6649d22656b3a4e92544ceeea8a2c6c07
https://git.kernel.org/stable/c/dd6b0ca6025f64ccb465a6a3460c5b0307ed9c44
https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.12.6

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?