CVE-2024-41011

In the Linux kernel, the following vulnerability has been resolved:

drm/amdkfd: dont allow mapping the MMIO HDP page with large pages

We dont get the right offset in that case. The GPU has an unused 4K area of the register BAR space into which you can remap registers. We remap the HDP flush registers into this space to allow userspace (CPU or GPU) to flush the HDP when it updates VRAM. However, on systems with >4K pages, we end up exposing PAGE_SIZE of MMIO space.

Weakness

The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management.

Affected Software

Potential Mitigations

• Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
• Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).
• Use languages, libraries, or frameworks that make it easier to handle numbers without unexpected consequences.
• Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++).

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/128.html
• https://cwe.mitre.org/data/definitions/129.html

References

• https://git.kernel.org/stable/c/009c4d78bcf07c4ac2e3dd9f275b4eaa72b4f884
• https://git.kernel.org/stable/c/4b4cff994a27ebf7bd3fb9a798a1cdfa8d01b724
• https://git.kernel.org/stable/c/6186c93560889265bfe0914609c274eff40bbeb5
• https://git.kernel.org/stable/c/89fffbdf535ce659c1a26b51ad62070566e33b28
• https://git.kernel.org/stable/c/8ad4838040e5515939c071a0f511ce2661a0889d
• https://git.kernel.org/stable/c/be4a2a81b6b90d1a47eaeaace4cc8e2cb57b96c7
• https://git.kernel.org/stable/c/f7276cdc1912325b64c33fcb1361952c06e55f63