This is a note to let you know that I've just added the patch titled
net: fool proof dev_valid_name()
to the 4.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-fool-proof-dev_valid_name.patch
and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed Apr 11 10:26:56 CEST 2018
From: Eric Dumazet <edumazet@xxxxxxxxxx>
Date: Thu, 5 Apr 2018 06:39:26 -0700
Subject: net: fool proof dev_valid_name()
From: Eric Dumazet <edumazet@xxxxxxxxxx>
[ Upstream commit a9d48205d0aedda021fc3728972a9e9934c2b9de ]
We want to use dev_valid_name() to validate tunnel names,
so better use strnlen(name, IFNAMSIZ) than strlen(name) to make
sure to not upset KASAN.
Signed-off-by: Eric Dumazet <edumazet@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/core/dev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -993,7 +993,7 @@ bool dev_valid_name(const char *name)
{
if (*name == '\0')
return false;
- if (strlen(name) >= IFNAMSIZ)
+ if (strnlen(name, IFNAMSIZ) == IFNAMSIZ)
return false;
if (!strcmp(name, ".") || !strcmp(name, ".."))
return false;
Patches currently in stable-queue which might be from edumazet@xxxxxxxxxx are
queue-4.9/tcp-better-validation-of-received-ack-sequences.patch
queue-4.9/sctp-sctp_sockaddr_af-must-check-minimal-addr-length-for-af_inet6.patch
queue-4.9/net-fix-possible-out-of-bound-read-in-skb_network_protocol.patch
queue-4.9/pptp-remove-a-buggy-dst-release-in-pptp_connect.patch
queue-4.9/x86-asm-don-t-use-rbp-as-a-temporary-register-in-csum_partial_copy_generic.patch
queue-4.9/net-fool-proof-dev_valid_name.patch
queue-4.9/ipv6-the-entire-ipv6-header-chain-must-fit-the-first-fragment.patch
queue-4.9/vti6-better-validate-user-provided-tunnel-names.patch
queue-4.9/ipv6-sit-better-validate-user-provided-tunnel-names.patch
queue-4.9/ip6_tunnel-better-validate-user-provided-tunnel-names.patch
queue-4.9/sctp-do-not-leak-kernel-memory-to-user-space.patch
queue-4.9/ip_tunnel-better-validate-user-provided-tunnel-names.patch
queue-4.9/skbuff-only-inherit-relevant-tx_flags.patch
queue-4.9/netlink-make-sure-nladdr-has-correct-size-in-netlink_connect.patch
queue-4.9/ip6_gre-better-validate-user-provided-tunnel-names.patch