diff options
| -rw-r--r-- | fs/binfmt_elf.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 54207327f98f..fd4b618c412e 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -418,8 +418,9 @@ static struct elf_phdr *load_elf_phdrs(struct elfhdr *elf_ex, struct file *elf_file) { struct elf_phdr *elf_phdata = NULL; - int retval, size, err = -1; + int retval, err = -1; loff_t pos = elf_ex->e_phoff; + unsigned int size; /* * If the size of this structure has changed, then punt, since @@ -429,13 +430,9 @@ static struct elf_phdr *load_elf_phdrs(struct elfhdr *elf_ex, goto out; /* Sanity check the number of program headers... */ - if (elf_ex->e_phnum < 1 || - elf_ex->e_phnum > 65536U / sizeof(struct elf_phdr)) - goto out; - /* ...and their total size. */ size = sizeof(struct elf_phdr) * elf_ex->e_phnum; - if (size > ELF_MIN_ALIGN) + if (size == 0 || size > 65536 || size > ELF_MIN_ALIGN) goto out; elf_phdata = kmalloc(size, GFP_KERNEL); |