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authorKees Cook <keescook@chromium.org>2024-04-25 22:08:50 +0200
committerAndrew Morton <akpm@linux-foundation.org>2024-04-26 05:55:59 +0200
commite13106952faad91c6e492bf23b7cbdf1b1c269ce (patch)
tree8d16261343e213ee7e0a9c2acdc0d3978b31863d /lib
parentmm: change inlined allocation helpers to account at the call site (diff)
downloadlinux-e13106952faad91c6e492bf23b7cbdf1b1c269ce.tar.xz
linux-e13106952faad91c6e492bf23b7cbdf1b1c269ce.zip
alloc_tag: Tighten file permissions on /proc/allocinfo
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. Link: https://lkml.kernel.org/r/20240425200844.work.184-kees@kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Kent Overstreet <kent.overstreet@linux.dev> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/alloc_tag.c2
1 files changed, 1 insertions, 1 deletions
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,