binutils: Security fix for CVE-2017-9749
Affects: <= 2.28 (From OE-Core rev: 8b177c76ce892c1ee064498b8fa21e99a993d69e) Signed-off-by: Armin Kuster <akuster808@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -60,6 +60,7 @@ SRC_URI = "\
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file://CVE-2017-9746.patch \
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file://CVE-2017-9747.patch \
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file://CVE-2017-9748.patch \
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file://CVE-2017-9749.patch \
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"
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S = "${WORKDIR}/git"
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@ -0,0 +1,77 @@
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From 08c7881b814c546efc3996fd1decdf0877f7a779 Mon Sep 17 00:00:00 2001
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From: Nick Clifton <nickc@redhat.com>
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Date: Thu, 15 Jun 2017 11:52:02 +0100
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Subject: [PATCH] Prevent invalid array accesses when disassembling a corrupt
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bfin binary.
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PR binutils/21586
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* bfin-dis.c (gregs): Clip index to prevent overflow.
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(regs): Likewise.
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(regs_lo): Likewise.
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(regs_hi): Likewise.
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Upstream-Status: Backport
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CVE: CVE-2017-9749
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Signed-off-by: Armin Kuster <akuster@mvista.com>
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---
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opcodes/ChangeLog | 8 ++++++++
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opcodes/bfin-dis.c | 8 ++++----
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2 files changed, 12 insertions(+), 4 deletions(-)
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Index: git/opcodes/ChangeLog
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===================================================================
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--- git.orig/opcodes/ChangeLog
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+++ git/opcodes/ChangeLog
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@@ -1,3 +1,11 @@
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+2017-06-15 Nick Clifton <nickc@redhat.com>
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+
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+ PR binutils/21586
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+ * bfin-dis.c (gregs): Clip index to prevent overflow.
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+ (regs): Likewise.
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+ (regs_lo): Likewise.
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+ (regs_hi): Likewise.
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+
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2017-06-14 Nick Clifton <nickc@redhat.com>
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PR binutils/21576
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Index: git/opcodes/bfin-dis.c
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===================================================================
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--- git.orig/opcodes/bfin-dis.c
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+++ git/opcodes/bfin-dis.c
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@@ -350,7 +350,7 @@ static const enum machine_registers deco
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REG_P0, REG_P1, REG_P2, REG_P3, REG_P4, REG_P5, REG_SP, REG_FP,
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};
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-#define gregs(x, i) REGNAME (decode_gregs[((i) << 3) | (x)])
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+#define gregs(x, i) REGNAME (decode_gregs[(((i) << 3) | (x)) & 15])
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/* [dregs pregs (iregs mregs) (bregs lregs)]. */
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static const enum machine_registers decode_regs[] =
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@@ -361,7 +361,7 @@ static const enum machine_registers deco
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REG_B0, REG_B1, REG_B2, REG_B3, REG_L0, REG_L1, REG_L2, REG_L3,
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};
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-#define regs(x, i) REGNAME (decode_regs[((i) << 3) | (x)])
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+#define regs(x, i) REGNAME (decode_regs[(((i) << 3) | (x)) & 31])
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/* [dregs pregs (iregs mregs) (bregs lregs) Low Half]. */
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static const enum machine_registers decode_regs_lo[] =
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@@ -372,7 +372,7 @@ static const enum machine_registers deco
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REG_BL0, REG_BL1, REG_BL2, REG_BL3, REG_LL0, REG_LL1, REG_LL2, REG_LL3,
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};
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-#define regs_lo(x, i) REGNAME (decode_regs_lo[((i) << 3) | (x)])
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+#define regs_lo(x, i) REGNAME (decode_regs_lo[(((i) << 3) | (x)) & 31])
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/* [dregs pregs (iregs mregs) (bregs lregs) High Half]. */
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static const enum machine_registers decode_regs_hi[] =
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@@ -383,7 +383,7 @@ static const enum machine_registers deco
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REG_BH0, REG_BH1, REG_BH2, REG_BH3, REG_LH0, REG_LH1, REG_LH2, REG_LH3,
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};
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-#define regs_hi(x, i) REGNAME (decode_regs_hi[((i) << 3) | (x)])
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+#define regs_hi(x, i) REGNAME (decode_regs_hi[(((i) << 3) | (x)) & 31])
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static const enum machine_registers decode_statbits[] =
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{
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