1.4 KiB
CVE-2024-50096
Description
In the Linux kernel, the following vulnerability has been resolved:nouveau/dmem: Fix vulnerability in migrate_to_ram upon copy errorThe nouveau_dmem_copy_one function ensures that the copy push command issent to the device firmware but does not track whether it was executedsuccessfully.In the case of a copy error (e.g., firmware or hardware failure), thecopy push command will be sent via the firmware channel, andnouveau_dmem_copy_one will likely report success, leading to themigrate_to_ram function returning a dirty HIGH_USER page to the user.This can result in a security vulnerability, as a HIGH_USER page that maycontain sensitive or corrupted data could be returned to the user.To prevent this vulnerability, we allocate a zero page. Thus, in case ofan error, a non-dirty (zero) page will be returned to the user.
POC
Reference
No PoCs from references.