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CVE-2021-42327 - log back

CVE-2021-42327 edited at 02 Nov 2021 23:25:37
Description	- dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer. + dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel before version 5.14.16 allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer.
References	- https://lore.kernel.org/all/CADN=F_ngDhs10tBOtQy4kz0T6ZEjLJ_q0P+7bpen=JU04cpUXg@mail.gmail.com/ - https://gitlab.freedesktop.org/agd5f/linux/-/commit/f23750b5b3d98653b31d4469592935ef6364ad67 + https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.14.16&id=d3ed72495a59fbfb9377450c8dfe94389a6509a7 + https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.77&id=eb3b6805e3e9d98b2507201fd061a231988ce623

CVE-2021-42327 edited at 28 Oct 2021 08:46:44

Description

- dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel through 5.14.14 allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer. + dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer.

CVE-2021-42327 edited at 21 Oct 2021 18:54:26
Severity	- Unknown + Medium
Remote	- Unknown + Local
Type	- Unknown + Arbitrary code execution
Description	+ dp_link_settings_write in drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c in the Linux kernel through 5.14.14 allows a heap-based buffer overflow by an attacker who can write a string to the AMD GPU display drivers debug filesystem. There are no checks on size within parse_write_buffer_into_params when it uses the size of copy_from_user to copy a userspace buffer into a 40-byte heap buffer.
References	+ https://lore.kernel.org/all/CADN=F_ngDhs10tBOtQy4kz0T6ZEjLJ_q0P+7bpen=JU04cpUXg@mail.gmail.com/ + https://gitlab.freedesktop.org/agd5f/linux/-/commit/f23750b5b3d98653b31d4469592935ef6364ad67

CVE-2021-42327 created at 21 Oct 2021 18:49:13
Severity	+ Unknown
Remote	+ Unknown
Type	+ Unknown
Description
References
Notes