#VU104867 Resource management error in Linux kernel - CVE-2022-49506

Vulnerability identifier: #VU104867

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-2022-49506

CWE-ID: CWE-399

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 resource management error within the mtk_drm_cmdq_pkt_destroy(), mtk_drm_crtc_destroy(), mtk_drm_crtc_enable_vblank() and mtk_drm_crtc_create() functions in drivers/gpu/drm/mediatek/mtk_drm_crtc.c, within the rdma_update_bits() function in drivers/gpu/drm/mediatek/mtk_disp_rdma.c, within the mtk_disp_ovl_irq_handler() and mtk_ovl_disable_vblank() functions in drivers/gpu/drm/mediatek/mtk_disp_ovl.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/3a4027b5971fe2a94e32754f007d9d3c12c68ad1
https://git.kernel.org/stable/c/8a265d9838bc3c63579002d55c2b2c655c4f8f26
https://git.kernel.org/stable/c/8a2dbdeccef6de47565638abdf3c25f41cdffc37
https://git.kernel.org/stable/c/b74d921b900b6ce38c6247c0a1c86be9f3746493

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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.