Re: [PATCH] mm: vmalloc: Prevent use after free in _vm_unmap_aliases

2021-03-24 Thread Uladzislau Rezki
> > On 3/18/2021 10:29 PM, Uladzislau Rezki wrote: > > On Thu, Mar 18, 2021 at 03:38:25PM +0530, vji...@codeaurora.org wrote: > >> From: Vijayanand Jitta > >> > >> A potential use after free can occur in _vm_unmap_aliases > >> where an already freed vmap_area could be accessed, Consider > >> the

Re: [PATCH] mm: vmalloc: Prevent use after free in _vm_unmap_aliases

2021-03-23 Thread Vijayanand Jitta
On 3/18/2021 10:29 PM, Uladzislau Rezki wrote: > On Thu, Mar 18, 2021 at 03:38:25PM +0530, vji...@codeaurora.org wrote: >> From: Vijayanand Jitta >> >> A potential use after free can occur in _vm_unmap_aliases >> where an already freed vmap_area could be accessed, Consider >> the following

Re: [PATCH] mm: vmalloc: Prevent use after free in _vm_unmap_aliases

2021-03-18 Thread Uladzislau Rezki
On Thu, Mar 18, 2021 at 03:38:25PM +0530, vji...@codeaurora.org wrote: > From: Vijayanand Jitta > > A potential use after free can occur in _vm_unmap_aliases > where an already freed vmap_area could be accessed, Consider > the following scenario: > > Process 1