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procfs privacy: /proc/kallsyms

PATCH In review Lorenzo Hernández García-Hierro 1 participant 1 message Apr 18, 2005

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Lorenzo Hernández García-Hierro

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PATCH 6/7 procfs privacy: /proc/kallsyms

This patch changes the permissions of the procfs entry kallsyms, thus, non-root users are restricted from accessing it.

It's also available at:
http://pearls.tuxedo-es.org/patches/security/proc-privacy-1_kernel_kallsyms.c.patch

Signature · 2 lines
Lorenzo Hernández García-Hierro <[email protected]> 
[1024D/6F2B2DEC] & [2048g/9AE91A22][http://tuxedo-es.org]
kernel/kallsyms.c renamed from kernel/kallsyms.c~proc-privacy-1 +1 -1
diff -puN kernel/kallsyms.c~proc-privacy-1 kernel/kallsyms.c
@@ -388,7 +388,7 @@ int __init kallsyms_init(void)
 {
 	struct proc_dir_entry *entry;
 
-	entry = create_proc_entry("kallsyms", 0444, NULL);
+	entry = create_proc_entry("kallsyms", S_IFREG | S_IRUSR, NULL);
 	if (entry)
 		entry->proc_fops = &kallsyms_operations;
 	return 0;