Memory leak in Linux kernel drm tests driver

1) Memory leak

EUVDB-ID: #VU100159

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-2024-50214

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

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

The vulnerability exists due to memory leak within the drm_test_drm_hdmi_compute_mode_clock_rgb(), drm_test_drm_hdmi_compute_mode_clock_rgb_10bpc(), drm_test_drm_hdmi_compute_mode_clock_rgb_10bpc_vic_1(), drm_test_drm_hdmi_compute_mode_clock_rgb_12bpc(), drm_test_drm_hdmi_compute_mode_clock_rgb_12bpc_vic_1(), drm_test_drm_hdmi_compute_mode_clock_rgb_double(), drm_test_connector_hdmi_compute_mode_clock_yuv420_valid(), drm_test_connector_hdmi_compute_mode_clock_yuv420_10_bpc(), drm_test_connector_hdmi_compute_mode_clock_yuv420_12_bpc(), drm_test_connector_hdmi_compute_mode_clock_yuv422_8_bpc(), drm_test_connector_hdmi_compute_mode_clock_yuv422_10_bpc() and drm_test_connector_hdmi_compute_mode_clock_yuv422_12_bpc() functions in drivers/gpu/drm/tests/drm_connector_test.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

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/stable/c/df2b00685cd33cd85be8910c7d6d22c4ebbf18bb
https://git.kernel.org/stable/c/926163342a2e7595d950e84c17c693b1272bd491

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.