[PATCH] net: dev_addr_list: add address length validation in __hw_addr_insert function
From: Suchit K <hidden>
Date: 2025-02-17 16:54:15
Also in:
linux-kernel-mentees, lkml
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Add validation checks for hardware address length in __hw_addr_insert() to prevent problems with invalid lengths. Signed-off-by: Suchit Karunakaran <redacted> --- net/core/dev_addr_lists.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/net/core/dev_addr_lists.c b/net/core/dev_addr_lists.c
index 90716bd73..b6b906b2a 100644
--- a/net/core/dev_addr_lists.c
+++ b/net/core/dev_addr_lists.c@@ -21,6 +21,9 @@ static int __hw_addr_insert(struct netdev_hw_addr_list *list, struct netdev_hw_addr *new, int addr_len) { + if (!list || !new || addr_len <= 0 || addr_len > MAX_ADDR_LEN) + return -EINVAL; + struct rb_node **ins_point = &list->tree.rb_node, *parent = NULL; struct netdev_hw_addr *ha;
--
2.48.1