This patch changes the permissions of the procfs entry config.gz, 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_configs.c.patch -- Lorenzo Hernández García-Hierro <[email protected]> [1024D/6F2B2DEC] & [2048g/9AE91A22][http://tuxedo-es.org]
diff -puN kernel/configs.c~proc-privacy-1 kernel/configs.c
--- linux-2.6.11/kernel/configs.c~proc-privacy-1 2005-04-17 18:04:39.281600856 +0200
+++ linux-2.6.11-lorenzo/kernel/configs.c 2005-04-17 18:05:33.478361696 +0200
@@ -89,7 +89,7 @@ static int __init ikconfig_init(void)
struct proc_dir_entry *entry;
/* create the current config file */
- entry = create_proc_entry("config.gz", S_IFREG | S_IRUGO,
+ entry = create_proc_entry("config.gz", S_IFREG | S_IRUSR,
&proc_root);
if (!entry)
return -ENOMEM;
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