The patch titled
sysctl: fix min/max handling in __do_proc_doulongvec_minmax()
has been added to the -mm tree. Its filename is
sysctl-fix-min-max-handling-in-__do_proc_doulongvec_minmax.patch
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------------------------------------------------------
Subject: sysctl: fix min/max handling in __do_proc_doulongvec_minmax()
From: Eric Dumazet <eric.dumazet@xxxxxxxxx>
When proc_doulongvec_minmax() is used with an array of longs, and no
min/max check requested (.extra1 or .extra2 being NULL), we dereference a
NULL pointer for the second element of the array.
Noticed while doing some changes in network stack for the "16TB problem"
Signed-off-by: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/sysctl.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN kernel/sysctl.c~sysctl-fix-min-max-handling-in-__do_proc_doulongvec_minmax kernel/sysctl.c
--- a/kernel/sysctl.c~sysctl-fix-min-max-handling-in-__do_proc_doulongvec_minmax
+++ a/kernel/sysctl.c
@@ -2500,7 +2500,8 @@ static int __do_proc_doulongvec_minmax(v
break;
if (neg)
continue;
- if ((min && val < *min) || (max && val > *max))
+ if ((table->extra1 && val < *min) ||
+ (table->extra2 && val > *max))
continue;
*i = val;
} else {
_
Patches currently in -mm which might be from eric.dumazet@xxxxxxxxx are
origin.patch
sysctl-fix-min-max-handling-in-__do_proc_doulongvec_minmax.patch
linux-next.patch
signals-annotate-lock_task_sighand.patch
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