github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-21 04:10:02 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph
e20d8922aa
linux/net
History
Fernando Fernandez Mancera e20d8922aa ipv6: addrconf: fix temp address generation after prefix deprecation 
When a router temporarily deprecates an IPv6 prefix (either by sending a
Router Advertisement with Preferred Lifetime = 0 or by letting the
lifetime expire) and later restores it, the kernel permanently loses its
ability to generate temporary privacy addresses (RFC 8981) for that
prefix.

This happens because the address worker attempts to generate a
replacement temporary address when the current one nears expiration. As
the base prefix is deprecated already, the generation fails after
marking the temporary address as already having spawned a replacement
(ifp->regen_count++).

When the router eventually restores the prefix, the temporary address
becomes active again. However, once it naturally expires, the address
worker sees this temporary address already tried to generate one and
skips the regeneration.

Fix the issue by resetting the regen_count check of the latest temp
address generated for the prefix updated by the incoming RA.

Reported-by: Łukasz Stelmach <steelman@post.pl>
Closes: https://lore.kernel.org/netdev/87340td30q.fsf%25steelman@post.pl/
Suggested-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260523103811.3790-1-fmancera@suse.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-26 17:45:24 -07:00
..
6lowpan
9p 9p/trans_xen: replace simple_strto* with kstrtouint 2026-04-16 02:57:01 +00:00
802 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
8021q 8021q: delete cleared egress QoS mappings 2026-04-23 12:13:57 +02:00
appletalk net: appletalk: fix NULL pointer dereference in aarp_send_ddp() 2026-05-18 16:33:34 -07:00
atm atm: convert to getsockopt_iter 2026-05-22 11:11:09 -07:00
batman-adv batman-adv: bla: avoid NULL-ptr deref for claim via dropped interface 2026-05-19 10:43:54 +02:00
bluetooth Bluetooth: fix UAF in l2cap_sock_cleanup_listen() vs l2cap_conn_del() 2026-05-20 16:35:47 -04:00
bpf bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb 2026-04-12 15:42:57 -07:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-21 15:09:02 -07:00
can Networking changes for 7.1. 2026-04-14 18:36:10 -07:00
ceph libceph: Fix potential null-ptr-deref in decode_choose_args() 2026-05-12 21:00:59 +02:00
core net: napi: Skip last poll when arming gro timer in busy poll 2026-05-26 17:34:40 -07:00
dcb Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
devlink devlink: pass param values by pointer 2026-05-25 14:03:06 -07:00
dns_resolver net: Add SPDX ids to some source files 2026-03-09 18:32:45 -07:00
dsa net: dsa: add NETC switch tag support 2026-05-21 13:04:42 +02:00
ethernet bonding: prevent potential infinite loop in bond_header_parse() 2026-03-16 19:29:45 -07:00
ethtool net/ethtool: drop duplicate TSCONFIG HWTSTAMP BUILD_BUG_ON from SET handler 2026-05-19 15:15:12 +02:00
handshake treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-21 15:09:02 -07:00
ieee802154 net: remove addr_len argument of recvmsg() handlers 2026-03-02 18:17:17 -08:00
ife
ipv4 ipv4: igmp: annotate data-races around im->users 2026-05-25 11:08:59 -07:00
ipv6 ipv6: addrconf: fix temp address generation after prefix deprecation 2026-05-26 17:45:24 -07:00
iucv af_iucv: convert to getsockopt_iter 2026-05-22 11:11:09 -07:00
kcm kcm: convert to getsockopt_iter 2026-05-10 10:11:08 -07:00
key vfs-7.1-rc1.kino 2026-04-13 12:19:01 -07:00
l2tp l2tp: ppp: convert to getsockopt_iter 2026-05-22 11:11:09 -07:00
l3mdev
lapb treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
llc llc: Add SPDX id lines to some llc source files 2026-05-26 17:26:57 -07:00
mac80211 Not much going on here right now: 2026-05-21 16:00:06 -07:00
mac802154 bonding: prevent potential infinite loop in bond_header_parse() 2026-03-16 19:29:45 -07:00
mctp mctp: convert to getsockopt_iter 2026-05-10 10:11:07 -07:00
mpls Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-04-02 11:03:13 -07:00
mptcp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-21 15:09:02 -07:00
ncsi net: ncsi: fix skb leak in error paths 2026-03-06 17:34:48 -08:00
netfilter netfilter: nf_queue: hold bridge skb->dev while queued 2026-05-16 13:23:01 +02:00
netlabel netlabel: fix IPv6 unlabeled address add error handling 2026-05-25 11:44:09 -07:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-14 10:08:06 -07:00
nfc NFC: digital: Bounds check NFC-A cascade depth in SDD response handler 2026-04-12 11:40:45 -07:00
nsh
openvswitch openvswitch: vport: fix race between linking and the device notifier 2026-05-18 16:38:45 -07:00
packet net/packet: fix TOCTOU race on mmap'd vnet_hdr in tpacket_snd() 2026-04-22 20:16:34 -07:00
phonet phonet/pep: disable BH around forwarded sk_receive_skb() 2026-05-21 07:38:21 -07:00
psample treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
psp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-07 11:19:07 -07:00
qrtr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-04-14 12:04:00 -07:00
rds rds: filter RDS_INFO_* getsockopt by caller's netns 2026-05-25 12:18:42 -07:00
rfkill net: rfkill: prevent unlimited numbers of rfkill events from being created 2026-04-07 12:35:04 +02:00
rxrpc rxrpc: convert to getsockopt_iter 2026-05-22 11:11:10 -07:00
sched net/sched: sch_ets: make cl->quantum lockless 2026-05-25 11:09:27 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-14 10:08:06 -07:00
shaper net: shaper: rework the VALID marking (again) 2026-05-20 16:34:20 -07:00
smc smc: Use flexible array for SMCD connections 2026-05-20 17:13:18 -07:00
strparser net: strparser: fix skb_head leak in strp_abort_strp() 2026-04-14 12:37:00 +02:00
sunrpc nfsd-7.1 fixes: 2026-05-15 13:11:41 -07:00
switchdev bridge: No DEV_PATH_BR_VLAN_UNTAG_HW for dsa foreign 2026-03-19 13:14:00 +01:00
tipc tipc: convert to getsockopt_iter 2026-05-22 11:11:10 -07:00
tls Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-21 15:09:02 -07:00
unix af_unix: Fix UAF read of tail->len in unix_stream_data_wait() 2026-05-19 18:53:56 -07:00
vmw_vsock Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2026-05-21 15:09:02 -07:00
wireless Not much going on here right now: 2026-05-21 16:00:06 -07:00
x25 x25: convert to getsockopt_iter 2026-05-10 10:11:08 -07:00
xdp xdp: convert to getsockopt_iter 2026-05-22 11:11:09 -07:00
xfrm xfrm: defensively unhash xfrm_state lists in __xfrm_state_delete 2026-04-29 11:27:34 +02:00
compat.c socket: Unify getsockname and getpeername implementation 2025-11-26 13:45:23 -07:00
devres.c
Kconfig net: remove ax25 and amateur radio (hamradio) subsystem 2026-04-23 10:24:02 -07:00
Kconfig.debug
Makefile net: remove ax25 and amateur radio (hamradio) subsystem 2026-04-23 10:24:02 -07:00
socket.c net: socket: clean up __sys_accept4 comment 2026-05-19 19:22:41 -07:00
sysctl_net.c