Messages in this thread | | | Subject | Re: [PATCH] sysctl: Check length at deprecated_sysctl_warning. | From | Tetsuo Handa <> | Date | Tue, 13 Nov 2007 12:50:32 +0900 |
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Hello.
Andrew Morton wrote: > I believe (args->nlen > CTL_MAXNAME) was correct. I'll leave it to you. But if you want to allow args->nlen == CTL_MAXNAME, you also need to update do_sysctl().
int do_sysctl(int __user *name, int nlen, void __user *oldval, size_t __user *oldlenp, void __user *newval, size_t newlen) { ... if (nlen <= 0 || nlen >= CTL_MAXNAME) return -ENOTDIR; ... }
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