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LibELF: Allow elf files with no section header to pass validation

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This commit is contained in:
Itamar 2020-12-04 12:19:50 +02:00 • committed by Andreas Kling
parent 07b4957361
commit 79769ee74e
1 changed files with 2 additions and 2 deletions
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4
Libraries/LibELF/Validation.cpp
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@ -93,7 +93,7 @@ bool validate_elf_header(const Elf32_Ehdr& elf_header, size_t file_size, bool ve
return false;
}
if (elf_header.e_phoff < elf_header.e_ehsize || elf_header.e_shoff < elf_header.e_ehsize) {
if (elf_header.e_phoff < elf_header.e_ehsize || (elf_header.e_shnum != SHN_UNDEF && elf_header.e_shoff < elf_header.e_ehsize)) {
if (verbose) {
dbgprintf("SHENANIGANS! program header offset (%d) or section header offset (%d) overlap with ELF header!\n",
elf_header.e_phoff, elf_header.e_shoff);
@ -148,7 +148,7 @@ bool validate_elf_header(const Elf32_Ehdr& elf_header, size_t file_size, bool ve
return false;
}
if (elf_header.e_shoff < end_of_last_program_header) {
if (elf_header.e_shoff != SHN_UNDEF && elf_header.e_shoff < end_of_last_program_header) {
if (verbose) {
dbgprintf("SHENANIGANS! Section header table begins at file offset %d, which is within program headers [ %d - %zu ]!\n",
elf_header.e_shoff, elf_header.e_phoff, end_of_last_program_header);