From: Siqi Chen <coc.cyqh@gmail.com>
When translating "imask" instruction of Tricore architecture, QEMU did not
check whether the register index was out of bounds, resulting in a global-buffer-overflow.
Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1698
Reported-by: Siqi Chen <coc.cyqh@gmail.com>
Signed-off-by: Siqi Chen <coc.cyqh@gmail.com>
Signed-off-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Message-Id: <20230612065633.149152-1-coc.cyqh@gmail.com>
Message-Id: <20230612113245.56667-2-kbastian@mail.uni-paderborn.de>
---
target/tricore/translate.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/target/tricore/translate.c b/target/tricore/translate.c
index 6712d98f6e..74faad4794 100644
--- a/target/tricore/translate.c
+++ b/target/tricore/translate.c
@@ -5339,6 +5339,7 @@ static void decode_rcrw_insert(DisasContext *ctx)
switch (op2) {
case OPC2_32_RCRW_IMASK:
+ CHECK_REG_PAIR(r4);
tcg_gen_andi_tl(temp, cpu_gpr_d[r3], 0x1f);
tcg_gen_movi_tl(temp2, (1 << width) - 1);
tcg_gen_shl_tl(cpu_gpr_d[r4 + 1], temp2, temp);