| Revision | 7e6ba255062b79f2cf34590ac0987abb335d29f1 (tree) |
|---|---|
| Zeit | 2007-11-12 02:43:12 |
| Autor | Andi Kleen <ak@suse...> |
| Commiter | Willy Tarreau |
[PATCH] x86_64: Make sure to validate all 64bits of ptrace information
This is CVE-2007-4573, found by Wojciech Purczynski.
Signed-off-by: Andi Kleen <ak@suse.de>
arch/x86_64/ia32/ia32entry.S (diff)| @@ -73,7 +73,7 @@ ia32_tracesys: | ||
| 73 | 73 | call syscall_trace |
| 74 | 74 | LOAD_ARGS ARGOFFSET /* reload args from stack in case ptrace changed it */ |
| 75 | 75 | RESTORE_REST |
| 76 | - cmpl $(IA32_NR_syscalls),%eax | |
| 76 | + cmpl $(IA32_NR_syscalls),%rax | |
| 77 | 77 | jae 1f |
| 78 | 78 | IA32_ARG_FIXUP |
| 79 | 79 | call *ia32_sys_call_table(,%rax,8) |
Linux Kernel Documents
Fork