NULL pointer dereference in Linux kernel vcodec common driver

1) NULL pointer dereference

EUVDB-ID: #VU90541

Risk: Low

CVSSv3.1: 4.8 [AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-35920

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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

External links

http://git.kernel.org/stable/c/0a2dc707aa42214f9c4827bd57e344e29a0841d6
http://git.kernel.org/stable/c/23aaf824121055ba81b55f75444355bd83c8eb38
http://git.kernel.org/stable/c/6467cda18c9f9b5f2f9a0aa1e2861c653e41f382

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.