| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-56697: drm/amdgpu: Fix the memory allocation issue in amdgpu_discovery_get_nps_info() |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amdgpu: Fix the memory allocation issue in amdgpu_discovery_get_nps_info() |
| |
| Fix two issues with memory allocation in amdgpu_discovery_get_nps_info() |
| for mem_ranges: |
| |
| - Add a check for allocation failure to avoid dereferencing a null |
| pointer. |
| |
| - As suggested by Christophe, use kvcalloc() for memory allocation, |
| which checks for multiplication overflow. |
| |
| Additionally, assign the output parameters nps_type and range_cnt after |
| the kvcalloc() call to prevent modifying the output parameters in case |
| of an error return. |
| |
| The Linux kernel CVE team has assigned CVE-2024-56697 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.11 with commit b194d21b9bcc15b50df1bc3ff7428e51c2918a6f and fixed in 6.11.11 with commit d14bea4e094871226ea69772d69dab8b7b5f4915 |
| Issue introduced in 6.11 with commit b194d21b9bcc15b50df1bc3ff7428e51c2918a6f and fixed in 6.12.2 with commit e8f1dbaa0437eba4e8c1d6a6d81eca2e2ce3d197 |
| Issue introduced in 6.11 with commit b194d21b9bcc15b50df1bc3ff7428e51c2918a6f and fixed in 6.13 with commit a1144da794adedb9447437c57d69add56494309d |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-56697 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/d14bea4e094871226ea69772d69dab8b7b5f4915 |
| https://git.kernel.org/stable/c/e8f1dbaa0437eba4e8c1d6a6d81eca2e2ce3d197 |
| https://git.kernel.org/stable/c/a1144da794adedb9447437c57d69add56494309d |
