The /proc/allocinfo file exposes a tremendous about of information about kernel build details, memory allocations (obviously), and potentially even image layout (due to ordering). As this is intended to be consumed by system owners (like /proc/slabinfo), use the same file permissions as there: 0400.
Signed-off-by: Kees Cook <[email protected]> --- Cc: Suren Baghdasaryan <[email protected]> Cc: Kent Overstreet <[email protected]> Cc: Andrew Morton <[email protected]> Cc: [email protected] --- lib/alloc_tag.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/alloc_tag.c b/lib/alloc_tag.c index 26af9982ddc4..531dbe2f5456 100644 --- a/lib/alloc_tag.c +++ b/lib/alloc_tag.c @@ -129,7 +129,7 @@ size_t alloc_tag_top_users(struct codetag_bytes *tags, size_t count, bool can_sl static void __init procfs_init(void) { - proc_create_seq("allocinfo", 0444, NULL, &allocinfo_seq_op); + proc_create_seq("allocinfo", 0400, NULL, &allocinfo_seq_op); } static bool alloc_tag_module_unload(struct codetag_type *cttype, -- 2.34.1
