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| author | jtl <jtl@FreeBSD.org> | 2016-01-07 15:37:17 +0000 |
|---|---|---|
| committer | jtl <jtl@FreeBSD.org> | 2016-01-07 15:37:17 +0000 |
| commit | 8c4e8fd3fd280f39cdbd53cf5317ec7cb2bb7914 (patch) | |
| tree | c1a3d67e3dd2b45078385538eba8674c12b48ae9 /sys/kern/imgact_elf.c | |
| parent | c801c4e6745984c5ee9c095ef03152d01de5bd60 (diff) | |
| download | FreeBSD-src-8c4e8fd3fd280f39cdbd53cf5317ec7cb2bb7914.zip FreeBSD-src-8c4e8fd3fd280f39cdbd53cf5317ec7cb2bb7914.tar.gz | |
MFC r292676:
Only allow one PT_INTERP ELF program header. This also fixes a potential
memory leak for interp_buf.
Diffstat (limited to 'sys/kern/imgact_elf.c')
| -rw-r--r-- | sys/kern/imgact_elf.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/sys/kern/imgact_elf.c b/sys/kern/imgact_elf.c index eaa3ee1..584b5da 100644 --- a/sys/kern/imgact_elf.c +++ b/sys/kern/imgact_elf.c @@ -783,6 +783,11 @@ __CONCAT(exec_, __elfN(imgact))(struct image_params *imgp) error = ENOEXEC; goto ret; } + if (interp != NULL) { + uprintf("Multiple PT_INTERP headers\n"); + error = ENOEXEC; + goto ret; + } interp_name_len = phdr[i].p_filesz; if (phdr[i].p_offset > PAGE_SIZE || interp_name_len > PAGE_SIZE - phdr[i].p_offset) { |
