Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ntfs: fix kmap_local_page() usage in compress Several compressed I/O paths discard the address returned by kmap_local_page() and later access or unmap the page using page_address(). This is invalid for highmem pages, and local mappings must also be unmapped using the address returned by kmap_local_page(). Map each destination page in ntfs_decompress() only while producing the current sub-block. Use memcpy_from_page(), memcpy_to_page(), and memzero_page() for the other page accesses. Remove unnecessary local mappings from ntfs_write_cb(), where pages are accessed through the vmap() mapping.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 495e90fa334828d4119061e2726af51d0a0fb4ed before 950e2ecc7aec21af24b05bc661a097a81c670409; affected 495e90fa334828d4119061e2726af51d0a0fb4ed before 6e03fbd5f772ad24ea64f7632e4d0d73184787ca |
| Linux / Linux | affected 7.1; unaffected 0 before 7.1; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.