From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:41440 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932538AbeAJM06 (ORCPT ); Wed, 10 Jan 2018 07:26:58 -0500 Subject: Patch "MIPS: Disallow outsized PTRACE_SETREGSET NT_PRFPREG regset accesses" has been added to the 4.14-stable tree To: macro@mips.com, Dave.Martin@arm.com, Paul.Burton@mips.com, alex@alex-smith.me.uk, gregkh@linuxfoundation.org, james.hogan@mips.com, ralf@linux-mips.org Cc: , From: Date: Wed, 10 Jan 2018 13:19:13 +0100 Message-ID: <1515586753101140@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled MIPS: Disallow outsized PTRACE_SETREGSET NT_PRFPREG regset accesses to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mips-disallow-outsized-ptrace_setregset-nt_prfpreg-regset-accesses.patch and it can be found in the queue-4.14 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From c8c5a3a24d395b14447a9a89d61586a913840a3b Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Mon, 11 Dec 2017 22:56:54 +0000 Subject: MIPS: Disallow outsized PTRACE_SETREGSET NT_PRFPREG regset accesses From: Maciej W. Rozycki commit c8c5a3a24d395b14447a9a89d61586a913840a3b upstream. Complement commit c23b3d1a5311 ("MIPS: ptrace: Change GP regset to use correct core dump register layout") and also reject outsized PTRACE_SETREGSET requests to the NT_PRFPREG regset, like with the NT_PRSTATUS regset. Signed-off-by: Maciej W. Rozycki Fixes: c23b3d1a5311 ("MIPS: ptrace: Change GP regset to use correct core dump register layout") Cc: James Hogan Cc: Paul Burton Cc: Alex Smith Cc: Dave Martin Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/17930/ Signed-off-by: Ralf Baechle Signed-off-by: Greg Kroah-Hartman --- arch/mips/kernel/ptrace.c | 3 +++ 1 file changed, 3 insertions(+) --- a/arch/mips/kernel/ptrace.c +++ b/arch/mips/kernel/ptrace.c @@ -541,6 +541,9 @@ static int fpr_set(struct task_struct *t BUG_ON(count % sizeof(elf_fpreg_t)); + if (pos + count > sizeof(elf_fpregset_t)) + return -EIO; + init_fp_ctx(target); if (sizeof(target->thread.fpu.fpr[0]) == sizeof(elf_fpreg_t)) Patches currently in stable-queue which might be from macro@mips.com are queue-4.14/mips-consistently-handle-buffer-counter-with-ptrace_setregset.patch queue-4.14/mips-disallow-outsized-ptrace_setregset-nt_prfpreg-regset-accesses.patch queue-4.14/mips-guard-against-any-partial-write-attempt-with-ptrace_setregset.patch queue-4.14/mips-also-verify-sizeof-elf_fpreg_t-with-ptrace_setregset.patch queue-4.14/mips-factor-out-nt_prfpreg-regset-access-helpers.patch queue-4.14/mips-validate-pr_set_fp_mode-prctl-2-requests-against-the-abi-of-the-task.patch queue-4.14/mips-fix-an-fcsr-access-api-regression-with-nt_prfpreg-and-msa.patch