diff options
| author | Artur Grabowski <art@cvs.openbsd.org> | 2001-07-30 11:58:37 +0000 |
|---|---|---|
| committer | Artur Grabowski <art@cvs.openbsd.org> | 2001-07-30 11:58:37 +0000 |
| commit | 7e30b92f64324e3a7561a1bba30cf003e4037d76 (patch) | |
| tree | ecc88716bd2bc466c6bfc34d82fb8cea3335ade9 /sys | |
| parent | ee84495193e2dd1b7afc925247e0e351281aa943 (diff) | |
Add a check for too big e_phnum that could cause us to malloc to
much and barf.
This should have been merged into this file from exec_elf64.c a long time ago.
Looking for volunteers to merge exec_elf.c and exec_elf64.c
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/kern/exec_elf.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/sys/kern/exec_elf.c b/sys/kern/exec_elf.c index 2eb09508aca..ed9c5d46536 100644 --- a/sys/kern/exec_elf.c +++ b/sys/kern/exec_elf.c @@ -1,4 +1,4 @@ -/* $OpenBSD: exec_elf.c,v 1.32 2001/06/22 14:14:07 deraadt Exp $ */ +/* $OpenBSD: exec_elf.c,v 1.33 2001/07/30 11:58:36 art Exp $ */ /* * Copyright (c) 1996 Per Fogelstrom @@ -189,6 +189,10 @@ elf_check_header(ehdr, type) if (ehdr->e_type != type) return (ENOEXEC); + /* Don't allow an insane amount of sections. */ + if (ehdr->e_phnum > 128) + return (ENOEXEC); + return (0); } @@ -232,6 +236,10 @@ os_ok: if (ehdr->e_type != type) return (ENOEXEC); + /* Don't allow an insane amount of sections. */ + if (ehdr->e_phnum > 128) + return (ENOEXEC); + *os = ehdr->e_ident[OI_OS]; return (0); } |