linux-stable.git/include/net, branch v6.1.185

tls: fix lockless read of strp->msg_ready in ->poll

2026-08-27T12:29:03+00:00

commit 0844370f8945086eb9335739d10205dcea8d707b upstream.

tls_sk_poll is called without locking the socket, and needs to read
strp->msg_ready (via tls_strp_msg_ready). Convert msg_ready to a bool
and use READ_ONCE/WRITE_ONCE where needed. The remaining reads are
only performed when the socket is locked.

Fixes: 121dca784fc0 ("tls: suppress wakeups unless we have a full record")
Signed-off-by: Sabrina Dubroca 
Link: https://lore.kernel.org/r/0b7ee062319037cf86af6b317b3d72f7bfcd2e97.1713797701.git.sd@queasysnail.net
Signed-off-by: Jakub Kicinski 
Stable-dep-of: 0844370f8945 ("tls: fix lockless read of strp->msg_ready in ->poll")
Assisted-by: Codex:GPT-5
Signed-off-by: Artem Dinaburg 
Signed-off-by: Greg Kroah-Hartman

Bluetooth: hci_core: Fix not handling hdev->le_num_of_adv_sets=1

2026-08-23T12:18:33+00:00

[ Upstream commit e77f43d531af41e9ce299eab10dcae8fa5dbc293 ]

If hdev->le_num_of_adv_sets is set to 1 it means that only handle 0x00
can be used, but since the MGMT interface instances start from 1
(instance 0 means all instances in case of MGMT_OP_REMOVE_ADVERTISING)
the code needs to map the instance to handle otherwise users will not be
able to advertise as instance 1 would attempt to use handle 0x01.

Fixes: 1d0fac2c38ed ("Bluetooth: Use controller sets when available")
Signed-off-by: Luiz Augusto von Dentz 
Stable-dep-of: cdc36db204ff ("Bluetooth: hci_sync: Fix advertising data UAFs")
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

Bluetooth: MGMT: Protect mgmt_pending list with its own lock

2026-08-23T12:18:32+00:00

[ Upstream commit 6fe26f694c824b8a4dbf50c635bee1302e3f099c ]

This uses a mutex to protect from concurrent access of mgmt_pending
list which can cause crashes like:

==================================================================
BUG: KASAN: slab-use-after-free in hci_sock_get_channel+0x60/0x68 net/bluetooth/hci_sock.c:91
Read of size 2 at addr ffff0000c48885b2 by task syz.4.334/7318

CPU: 0 UID: 0 PID: 7318 Comm: syz.4.334 Not tainted 6.15.0-rc7-syzkaller-g187899f4124a #0 PREEMPT
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xa8/0x254 mm/kasan/report.c:408
 print_report+0x68/0x84 mm/kasan/report.c:521
 kasan_report+0xb0/0x110 mm/kasan/report.c:634
 __asan_report_load2_noabort+0x20/0x2c mm/kasan/report_generic.c:379
 hci_sock_get_channel+0x60/0x68 net/bluetooth/hci_sock.c:91
 mgmt_pending_find+0x7c/0x140 net/bluetooth/mgmt_util.c:223
 pending_find net/bluetooth/mgmt.c:947 [inline]
 remove_adv_monitor+0x44/0x1a4 net/bluetooth/mgmt.c:5445
 hci_mgmt_cmd+0x780/0xc00 net/bluetooth/hci_sock.c:1712
 hci_sock_sendmsg+0x544/0xbb0 net/bluetooth/hci_sock.c:1832
 sock_sendmsg_nosec net/socket.c:712 [inline]
 __sock_sendmsg net/socket.c:727 [inline]
 sock_write_iter+0x25c/0x378 net/socket.c:1131
 new_sync_write fs/read_write.c:591 [inline]
 vfs_write+0x62c/0x97c fs/read_write.c:684
 ksys_write+0x120/0x210 fs/read_write.c:736
 __do_sys_write fs/read_write.c:747 [inline]
 __se_sys_write fs/read_write.c:744 [inline]
 __arm64_sys_write+0x7c/0x90 fs/read_write.c:744
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Allocated by task 7037:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x44/0x54 mm/kasan/generic.c:562
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0x9c/0xb4 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4327 [inline]
 __kmalloc_noprof+0x2fc/0x4c8 mm/slub.c:4339
 kmalloc_noprof include/linux/slab.h:909 [inline]
 sk_prot_alloc+0xc4/0x1f0 net/core/sock.c:2198
 sk_alloc+0x44/0x3ac net/core/sock.c:2254
 bt_sock_alloc+0x4c/0x300 net/bluetooth/af_bluetooth.c:148
 hci_sock_create+0xa8/0x194 net/bluetooth/hci_sock.c:2202
 bt_sock_create+0x14c/0x24c net/bluetooth/af_bluetooth.c:132
 __sock_create+0x43c/0x91c net/socket.c:1541
 sock_create net/socket.c:1599 [inline]
 __sys_socket_create net/socket.c:1636 [inline]
 __sys_socket+0xd4/0x1c0 net/socket.c:1683
 __do_sys_socket net/socket.c:1697 [inline]
 __se_sys_socket net/socket.c:1695 [inline]
 __arm64_sys_socket+0x7c/0x94 net/socket.c:1695
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600

Freed by task 6607:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_free_info+0x58/0x70 mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x68/0x88 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2380 [inline]
 slab_free mm/slub.c:4642 [inline]
 kfree+0x17c/0x474 mm/slub.c:4841
 sk_prot_free net/core/sock.c:2237 [inline]
 __sk_destruct+0x4f4/0x760 net/core/sock.c:2332
 sk_destruct net/core/sock.c:2360 [inline]
 __sk_free+0x320/0x430 net/core/sock.c:2371
 sk_free+0x60/0xc8 net/core/sock.c:2382
 sock_put include/net/sock.h:1944 [inline]
 mgmt_pending_free+0x88/0x118 net/bluetooth/mgmt_util.c:290
 mgmt_pending_remove+0xec/0x104 net/bluetooth/mgmt_util.c:298
 mgmt_set_powered_complete+0x418/0x5cc net/bluetooth/mgmt.c:1355
 hci_cmd_sync_work+0x204/0x33c net/bluetooth/hci_sync.c:334
 process_one_work+0x7e8/0x156c kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x958/0xed8 kernel/workqueue.c:3400
 kthread+0x5fc/0x75c kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:847

Fixes: a380b6cff1a2 ("Bluetooth: Add generic mgmt helper API")
Closes: https://syzkaller.appspot.com/bug?extid=0a7039d5d9986ff4ecec
Closes: https://syzkaller.appspot.com/bug?extid=cc0cc52e7f43dc9e6df1
Reported-by: syzbot+0a7039d5d9986ff4ecec@syzkaller.appspotmail.com
Tested-by: syzbot+0a7039d5d9986ff4ecec@syzkaller.appspotmail.com
Tested-by: syzbot+cc0cc52e7f43dc9e6df1@syzkaller.appspotmail.com
Signed-off-by: Dmitry Antipov 
Signed-off-by: Luiz Augusto von Dentz 
Stable-dep-of: d0a7b48ad092 ("Bluetooth: mgmt: fix UAF in pair command cancellation")
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

Bluetooth: hci_sync: Introduce hci_cmd_sync_run/hci_cmd_sync_run_once

2026-08-23T12:18:32+00:00

[ Upstream commit c898f6d7b093bd71e66569cd6797c87d4056f44b ]

This introduces hci_cmd_sync_run/hci_cmd_sync_run_once which acts like
hci_cmd_sync_queue/hci_cmd_sync_queue_once but runs immediately when
already on hdev->cmd_sync_work context.

Signed-off-by: Luiz Augusto von Dentz 
Stable-dep-of: d0a7b48ad092 ("Bluetooth: mgmt: fix UAF in pair command cancellation")
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

net: move skb_gro_receive_list from udp to core

2026-08-23T12:18:31+00:00

[ Upstream commit 8928756d53d5b99dcd18073dc7738b8ebdbe7d96 ]

This helper function will be used for TCP fraglist GRO support

Acked-by: Paolo Abeni 
Reviewed-by: Eric Dumazet 
Signed-off-by: Felix Fietkau 
Reviewed-by: David Ahern 
Reviewed-by: Willem de Bruijn 
Signed-off-by: Paolo Abeni 
Stable-dep-of: e751256486d0 ("net: gro: fix double aggregation of flush-marked skbs")
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

Bluetooth: HCI: Remove HCI_AMP support

2026-08-23T12:18:28+00:00

[ Upstream commit 84a4bb6548a29326564f0e659fb8064503ecc1c7 ]

Since BT_HS has been remove HCI_AMP controllers no longer has any use so
remove it along with the capability of creating AMP controllers.

Since we no longer need to differentiate between AMP and Primary
controllers, as only HCI_PRIMARY is left, this also remove
hdev->dev_type altogether.

Fixes: e7b02296fb40 ("Bluetooth: Remove BT_HS")
Signed-off-by: Luiz Augusto von Dentz 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

netfilter: nf_tables: Remove unused nft_reduce_is_readonly()

2026-08-23T12:18:24+00:00

[ Upstream commit bf6788742b8d6c73de441e088a71de7154f0d4aa ]

Since commit 9e539c5b6d9c ("netfilter: nf_tables: disable expression
reduction infra") this is unused.

Signed-off-by: Yue Haibing 
Reviewed-by: Simon Horman 
Signed-off-by: Pablo Neira Ayuso 
Stable-dep-of: d07955dd34ec ("netfilter: nft_fib: reject fib expression on the netdev egress hook")
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

netfilter: nf_tables: drop unused 3rd argument from validate callback ops

2026-08-23T12:18:24+00:00

[ Upstream commit eaf9b2c875ece22768b78aa38da8b232e5de021b ]

Since commit a654de8fdc18 ("netfilter: nf_tables: fix chain dependency validation")
the validate() callback no longer needs the return pointer argument.

Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso 
Stable-dep-of: d07955dd34ec ("netfilter: nft_fib: reject fib expression on the netdev egress hook")
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

netfilter: nf_tables: pass context structure to nft_parse_register_load

2026-08-23T12:18:24+00:00

[ Upstream commit 7ea0522ef81a335c2d3a0ab1c8a4fab9a23c4a03 ]

Mechanical transformation, no logical changes intended.

Signed-off-by: Florian Westphal 
Signed-off-by: Pablo Neira Ayuso 
Stable-dep-of: d07955dd34ec ("netfilter: nft_fib: reject fib expression on the netdev egress hook")
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

ipvs: separate destination availability state

2026-08-23T12:18:17+00:00

commit cdcc4e46180df8161f4d2f3c6fd6beaf6990133d upstream.

IPVS configuration paths update destination availability while connection
accounting updates destination overload state. The two independent states
share dest->flags, so their read-modify-write updates can race and lose one
another.

Keep OVERLOAD in flags, where the preceding patch serializes its updates
with dst_lock, and move AVAILABLE to cflags. This keeps configuration-
controlled availability out of the scheduler hot cacheline until a
scheduler needs to check it. It also prevents availability updates from
clobbering overload state.

The destination status bits are not exposed through the IPVS sockopt or
netlink interfaces, so keep their definitions in the internal IPVS header.

Readers can still observe stale destination state; this does not provide a
cross-field snapshot.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Cc: stable@vger.kernel.org
Reported-by: Yizhou Zhao 
Reported-by: Yuxiang Yang 
Reported-by: Ao Wang 
Reported-by: Xuewei Feng 
Reported-by: Qi Li 
Reported-by: Ke Xu 
Link: https://lore.kernel.org/all/8913381c-1e02-35c7-0ec4-61de5a12fd35@ssi.bg/
Assisted-by: Claude-Code:GLM-5.2
Suggested-by: Julian Anastasov 
Signed-off-by: Yizhou Zhao 
Acked-by: Julian Anastasov 
Signed-off-by: Pablo Neira Ayuso 
(cherry picked from commit cdcc4e46180df8161f4d2f3c6fd6beaf6990133d)
[ Julian: Backport by removing the hunks from ip_vs_xmit.c ]
Signed-off-by: Julian Anastasov 
Signed-off-by: Sasha Levin