SB2025040251 - Out-of-bounds read in Linux kernel dml2 dml21 driver

Description

This security bulletin contains information about 1 vulnerability.

1) Out-of-bounds read (CVE-ID: CVE-2025-21985)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: 6.8 [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]

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

The vulnerability exists due to an out-of-bounds read error within the populate_dml_output_cfg_from_stream_state() and map_dc_state_into_dml_display_cfg() functions in drivers/gpu/drm/amd/display/dc/dml2/dml2_translation_helper.c, within the dml21_map_dc_state_into_dml_display_cfg() function in drivers/gpu/drm/amd/display/dc/dml2/dml21/dml21_translation_helper.c. A local user can perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://git.kernel.org/stable/c/36793d90d76f667d26c6dd025571481ee0c96abc
• https://git.kernel.org/stable/c/8adbb2a98b00926315fd513b5fe2596b5716b82d
• https://git.kernel.org/stable/c/9aedc776b11038f04f4641241bb7e877781e4aa4
• https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.13.8