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dbghelp/dwarf: Detect out of section sibling DIE information. 

Signed-off-by: Eric Pouech <eric.pouech@gmail.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Eric Pouech 2021-09-15 10:38:23 +02:00 committed by Alexandre Julliard
parent 34b06f873a
commit f0c9397459
1 changed files with 6 additions and 0 deletions
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6
dlls/dbghelp/dwarf.c
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@ -1244,6 +1244,12 @@ static BOOL dwarf2_read_one_debug_info(dwarf2_parse_context_t* ctx,
if (dwarf2_find_attribute(ctx, di, DW_AT_sibling, &sibling) &&
traverse->data != ctx->module_ctx->sections[ctx->section].address + sibling.u.uvalue)
{
if (sibling.u.uvalue >= ctx->module_ctx->sections[ctx->section].size)
{
FIXME("cursor sibling after section end %s: 0x%lx 0x%x\n",
dwarf2_debug_ctx(ctx), sibling.u.uvalue, ctx->module_ctx->sections[ctx->section].size);
return FALSE;
}
WARN("setting cursor for %s to next sibling <0x%lx>\n",
dwarf2_debug_traverse_ctx(traverse), sibling.u.uvalue);
traverse->data = ctx->module_ctx->sections[ctx->section].address + sibling.u.uvalue;