#VU90541 NULL pointer dereference in Linux kernel - CVE-2024-35920

Vulnerability identifier: #VU90541

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-2024-35920

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 vpu_dec_check_ap_inst() function in drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c, within the fops_vcodec_open(), fops_vcodec_release() and mtk_vcodec_probe() functions in drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.c, within the mtk_vcodec_vpu_reset_dec_handler() function in drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_vpu.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/0a2dc707aa42214f9c4827bd57e344e29a0841d6
https://git.kernel.org/stable/c/23aaf824121055ba81b55f75444355bd83c8eb38
https://git.kernel.org/stable/c/6467cda18c9f9b5f2f9a0aa1e2861c653e41f382

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.