diff options
| author | Stephane Eranian <eranian@hpl.hp.com> | 2006-10-17 14:50:56 +0200 |
|---|---|---|
| committer | Adrian Bunk <bunk@stusta.de> | 2006-10-17 14:50:56 +0200 |
| commit | 61dd5c3368db90edf32a5ceb4dde76cc18f34009 (patch) | |
| tree | 0914b29b7cbe8dc2c1d833ca8e9dc954cea527b3 /arch | |
| parent | 08f8337b2930f9b0924e6c0e362b11f7216766c0 (diff) | |
[IA64] correct file descriptor reference counting in perfmon (CVE-2006-3741)
Fix a bug in sys_perfmonctl() whereby it was not correctly
decrementing the file descriptor reference count.
Signed-off-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ia64/kernel/perfmon.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c index 9c5194b385d..9b42b02b85e 100644 --- a/arch/ia64/kernel/perfmon.c +++ b/arch/ia64/kernel/perfmon.c @@ -4937,13 +4937,15 @@ abort_locked: if (likely(ctx)) { DPRINT(("context unlocked\n")); UNPROTECT_CTX(ctx, flags); - fput(file); } /* copy argument back to user, if needed */ if (call_made && PFM_CMD_RW_ARG(cmd) && copy_to_user(arg, args_k, base_sz*count)) ret = -EFAULT; error_args: + if (file) + fput(file); + kfree(args_k); DPRINT(("cmd=%s ret=%ld\n", PFM_CMD_NAME(cmd), ret)); |