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| author | Andrew Waterman <andrew@sifive.com> | 2024-04-17 14:56:20 -0700 |
|---|---|---|
| committer | Andrew Waterman <andrew@sifive.com> | 2024-05-20 18:37:48 -0700 |
| commit | 395f318f5ea0cc450020a3b413c585a452ba8398 (patch) | |
| tree | b6f38c0c49c25eec01d7faf8df8c34dc19fda20c | |
| parent | 9388057c145d57b65f38a79ee5b860479feea90d (diff) | |
| download | pk-395f318f5ea0cc450020a3b413c585a452ba8398.zip pk-395f318f5ea0cc450020a3b413c585a452ba8398.tar.gz pk-395f318f5ea0cc450020a3b413c585a452ba8398.tar.bz2 | |
Add ELF header sanity check
| -rw-r--r-- | pk/elf.c | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -76,6 +76,8 @@ void load_elf(const char* fn, elf_info* info) panic("not a statically linked ELF program"); } if(ph[i].p_type == PT_LOAD && ph[i].p_memsz) { + if (ph[i].p_filesz > ph[i].p_memsz) + goto fail; uintptr_t prepad = ph[i].p_vaddr % RISCV_PGSIZE; uintptr_t vaddr = ph[i].p_vaddr + bias; if (vaddr + ph[i].p_memsz > info->brk_min) |