#VU104379 Memory leak in Linux kernel - CVE-2022-49135

Vulnerability identifier: #VU104379

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-2022-49135

CWE-ID: CWE-401

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 memory leak within the dp_link_settings_read(), dp_phy_settings_read(), dp_dsc_clock_en_read(), dp_dsc_slice_width_read(), dp_dsc_slice_height_read(), dp_dsc_bits_per_pixel_read(), dp_dsc_pic_width_read(), dp_dsc_pic_height_read(), dp_dsc_chunk_size_read(), dp_dsc_slice_bpg_offset_read() and dcc_en_bits_read() functions in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.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/3ce1497add6d17b48cc9df65095bd20202d93994
https://git.kernel.org/stable/c/5d5c6dba2b43e28845d7d7ed32a36802329a5f52
https://git.kernel.org/stable/c/7e10369c72db7a0e2f77b2e306aadc07aef6b07a
https://git.kernel.org/stable/c/9d0bef3cc22cf250278ed45b829f062a00af9e27

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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.