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winedbg: Protect against incorrect integer size in be_cpu.fetch_integer() method. 

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Eric Pouech 2021-11-26 17:30:52 +01:00 committed by Alexandre Julliard
parent c8006d07eb
commit 0ed49fabc3
4 changed files with 8 additions and 5 deletions
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3
programs/winedbg/be_arm.c
View File

@ -1834,7 +1834,8 @@ static int be_arm_adjust_pc_for_break(dbg_ctx_t *ctx, BOOL way)
static BOOL be_arm_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
BOOL is_signed, LONGLONG* ret)
{
if (size != 1 && size != 2 && size != 4 && size != 8) return FALSE;
/* size must fit in ret and be a power of two */
if (size > sizeof(*ret) || (size & (size - 1))) return FALSE;
memset(ret, 0, sizeof(*ret)); /* clear unread bytes */
/* FIXME: this assumes that debuggee and debugger use the same

3
programs/winedbg/be_arm64.c
View File

@ -231,7 +231,8 @@ static int be_arm64_adjust_pc_for_break(dbg_ctx_t *ctx, BOOL way)
static BOOL be_arm64_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
BOOL is_signed, LONGLONG* ret)
{
if (size != 1 && size != 2 && size != 4 && size != 8) return FALSE;
/* size must fit in ret and be a power of two */
if (size > sizeof(*ret) || (size & (size - 1))) return FALSE;
memset(ret, 0, sizeof(*ret)); /* clear unread bytes */
/* FIXME: this assumes that debuggee and debugger use the same

3
programs/winedbg/be_i386.c
View File

@ -780,7 +780,8 @@ static int be_i386_adjust_pc_for_break(dbg_ctx_t *ctx, BOOL way)
static BOOL be_i386_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
BOOL is_signed, LONGLONG* ret)
{
if (size != 1 && size != 2 && size != 4 && size != 8 && size != 16) return FALSE;
/* size must fit in ret and be a power of two */
if (size > sizeof(*ret) || (size & (size - 1))) return FALSE;
memset(ret, 0, sizeof(*ret)); /* clear unread bytes */
/* FIXME: this assumes that debuggee and debugger use the same

4
programs/winedbg/be_x86_64.c
View File

@ -702,8 +702,8 @@ static int be_x86_64_adjust_pc_for_break(dbg_ctx_t *ctx, BOOL way)
static BOOL be_x86_64_fetch_integer(const struct dbg_lvalue* lvalue, unsigned size,
BOOL is_signed, LONGLONG* ret)
{
if (size != 1 && size != 2 && size != 4 && size != 8 && size != 16)
return FALSE;
/* size must fit in ret and be a power of two */
if (size > sizeof(*ret) || (size & (size - 1))) return FALSE;
memset(ret, 0, sizeof(*ret)); /* clear unread bytes */
/* FIXME: this assumes that debuggee and debugger use the same