diff options
Diffstat (limited to 'fs/binfmt_elf.c')
-rw-r--r-- | fs/binfmt_elf.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 2aed667..e314d98 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -746,6 +746,7 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) i < loc->elf_ex.e_phnum; i++, elf_ppnt++) { int elf_prot = 0, elf_flags; unsigned long k, vaddr; + unsigned long total_size = 0; if (elf_ppnt->p_type != PT_LOAD) continue; @@ -809,10 +810,16 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs) #else load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr); #endif + total_size = total_mapping_size(elf_phdata, + loc->elf_ex.e_phnum); + if (!total_size) { + error = -EINVAL; + goto out_free_dentry; + } } error = elf_map(bprm->file, load_bias + vaddr, elf_ppnt, - elf_prot, elf_flags, 0); + elf_prot, elf_flags, total_size); if (BAD_ADDR(error)) { send_sig(SIGKILL, current, 0); retval = IS_ERR((void *)error) ? |