Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: drm/panthor: reject firmware sections with oversized data In panthor_fw_load_section_entry(), the data size to copy is calculated without validating it against the allocated section_size: section->data.size = hdr.data.end - hdr.data.start; If a crafted firmware sets data.size larger than the allocated memory, this could cause a heap buffer overflow in panthor_fw_init_section_mem() memcpy(section->mem->kmap, section->data.buf, section->data.size); Additionally, if the section->data.size exceeds the BO size, could this memset underflow the size calculation, leading to a massive out-of-bounds zeroing of kernel memory? memset(section->mem->kmap + section->data.size, 0, panthor_kernel_bo_size(section->mem) - section->data.size); Reject section entries whose initial data is larger than the section size.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 2718d91816eeed03c09c8abe872e45f59078768c before 0e57165ca025a67d8dfd17efd2765fdd4925fdab; affected 2718d91816eeed03c09c8abe872e45f59078768c before 2a761b9be5863e1d26a584f0c2d1e114a684ed9a; affected 2718d91816eeed03c09c8abe872e45f59078768c before 7f4674d986c15c74327cb6ac6e2e2afecf061e04; affected 2718d91816eeed03c09c8abe872e45f59078768c before a3caaa06809248b996254be5b47e10804a3494e2 |
| Linux / Linux | affected 6.10; unaffected 0 before 6.10; unaffected 6.12.103 through 6.12.*; unaffected 6.18.44 through 6.18.*; unaffected 7.1.8 through 7.1.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.