From: Siqi Chen Date: Mon, 12 Jun 2023 11:32:42 +0000 (+0200) Subject: target/tricore: Fix out-of-bounds index in imask instruction X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=d34b092cab606a47a0d76edde45aab7100bb2435;p=qmiga%2Fqemu.git target/tricore: Fix out-of-bounds index in imask instruction 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 Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1698 Reported-by: Siqi Chen Signed-off-by: Siqi Chen Signed-off-by: Bastian Koppelmann Message-Id: <20230612065633.149152-1-coc.cyqh@gmail.com> Message-Id: <20230612113245.56667-2-kbastian@mail.uni-paderborn.de> --- 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);