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-rw-r--r--security/selinux/hooks.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 118ddfb614ee..b8ede1c7607b 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -1451,6 +1451,12 @@ static int selinux_sysctl_get_sid(ctl_table *table, u16 tclass, u32 *sid)
path = end;
table = table->parent;
}
+ buflen -= 4;
+ if (buflen < 0)
+ goto out_free;
+ end -= 4;
+ memcpy(end, "/sys", 4);
+ path = end;
rc = security_genfs_sid("proc", path, tclass, sid);
out_free:
free_page((unsigned long)buffer);