sysctl: require CAP_SYS_RAWIO to set mmap_min_addr

[sfrench/cifs-2.6.git] / security / min_addr.c

diff --git a/security/min_addr.c b/security/min_addr.c
index c844eed7915d0d270c058c16d6b3db40ffa576d0..fc43c9d37084599056680e55c5e8c38491b117ba 100644 (file)
--- a/security/min_addr.c
+++ b/security/min_addr.c
@@ -33,6 +33,9 @@ int mmap_min_addr_handler(struct ctl_table *table, int write,
 {
        int ret;
 
+       if (!capable(CAP_SYS_RAWIO))
+               return -EPERM;
+
        ret = proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
 
        update_mmap_min_addr();