lkml.org 
[lkml]   [2017]   [Jun]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] nfc: Add sockaddr length checks before accessing sa_family in bind handlers
On Tue, Jun 13, 2017 at 06:44:28PM +0200, Mateusz Jurczyk wrote:
> Verify that the caller-provided sockaddr structure is large enough to
> contain the sa_family field, before accessing it in bind() handlers of the
> AF_NFC socket. Since the syscall doesn't enforce a minimum size of the
> corresponding memory region, very short sockaddrs (zero or one byte long)
> result in operating on uninitialized memory while referencing .sa_family.
>
> Signed-off-by: Mateusz Jurczyk <mjurczyk@google.com>
> ---
> net/nfc/llcp_sock.c | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
Applied to nfc-next, thanks.

Cheers,
Samuel.

\
 
 \ /
  Last update: 2017-06-23 00:43    [W:0.182 / U:0.012 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site