Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1282705

Re: [PATCH] sctp: use GFP_USER for user-controlled kmalloc

Show all headers | View raw

From: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Date: Mon, 30 Nov 2015 14:32:54 -0200

> Dmitry Vyukov reported that the user could trigger a kernel warning by
> using a large len value for getsockopt SCTP_GET_LOCAL_ADDRS, as that
> value directly affects the value used as a kmalloc() parameter.
> 
> This patch thus switches the allocation flags from all user-controllable
> kmalloc size to GFP_USER to put some more restrictions on it and also
> disables the warn, as they are not necessary.
> 
> Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
> Acked-by: Daniel Borkmann <daniel@iogearbox.net>

Applied.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

[PATCH] sctp: use GFP_USER for user-controlled kmalloc Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> - 2015-11-30 17:40 +0100
  RE: [PATCH] sctp: use GFP_USER for user-controlled kmalloc David Laight <David.Laight@ACULAB.COM> - 2015-12-01 11:50 +0100
    Re: [PATCH] sctp: use GFP_USER for user-controlled kmalloc Daniel Borkmann <daniel@iogearbox.net> - 2015-12-01 12:30 +0100
  Re: [PATCH] sctp: use GFP_USER for user-controlled kmalloc David Miller <davem@davemloft.net> - 2015-12-03 05:50 +0100

csiph-web