UBUNTU-CVE-2024-26625
In the Linux kernel, the following vulnerability has been resolved: llc: call sock_orphan() at release time syzbot reported an interesting trace [1] caused by a stale sk->sk_wq pointer in a closed llc socket. In commit ff7b11aa481f ("net: socket: set sock->sk to NULL after calling proto_ops::release()") Eric Biggers hinted that some protocols are missing a sock_orphan(), we need to perform a full audit. In net-next, I plan to clear sock->sk from sock_orphan() and amend Eric patch to add a warning. [1] BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline] BUG: KASAN: slab-use-after-free in waitqueue_active include/linux/wait.h:127 [inline] BUG: KASAN: slab-use-after-free in sock_def_write_space_wfree net/core/sock.c:3384 [inline] BUG: KASAN: slab-use-after-free in sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468 Read of size 8 at addr ffff88802f4fc880 by task ksoftirqd/1/27 CPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 list_empty include/linux/list.h:373 [inline] waitqueue_active include/linux/wait.h:127 [inline] sock_def_write_space_wfree net/core/sock.c:3384 [inline] sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468 skb_release_head_state+0xa3/0x2b0 net/core/skbuff.c:1080 skb_release_all net/core/skbuff.c:1092 [inline] napi_consume_skb+0x119/0x2b0 net/core/skbuff.c:1404 e1000_unmap_and_free_tx_resource+0x144/0x200 drivers/net/ethernet/intel/e1000/e1000_main.c:1970 e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3860 [inline] e1000_clean+0x4a1/0x26e0 drivers/net/ethernet/intel/e1000/e1000_main.c:3801 __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6576 napi_poll net/core/dev.c:6645 [inline] net_rx_action+0x956/0xe90 net/core/dev.c:6778 __do_softirq+0x21a/0x8de kernel/softirq.c:553 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x660/0xa10 kernel/smpboot.c:164 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 </TASK> Allocated by task 5167: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:314 [inline] __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc_lru+0x142/0x6f0 mm/slub.c:3879 alloc_inode_sb include/linux/fs.h:3019 [inline] sock_alloc_inode+0x25/0x1c0 net/socket.c:308 alloc_inode+0x5d/0x220 fs/inode.c:260 new_inode_pseudo+0x16/0x80 fs/inode.c:1005 sock_alloc+0x40/0x270 net/socket.c:634 __sock_create+0xbc/0x800 net/socket.c:1535 sock_create net/socket.c:1622 [inline] __sys_socket_create net/socket.c:1659 [inline] __sys_socket+0x14c/0x260 net/socket.c:1706 __do_sys_socket net/socket.c:1720 [inline] __se_sys_socket net/socket.c:1718 [inline] __x64_sys_socket+0x72/0xb0 net/socket.c:1718 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 0: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x121/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inlin ---truncated---
02 / AFFECTED SOFTWARE
Affected packages
7 explicit affected versions
29 explicit affected versions
41 explicit affected versions
50 explicit affected versions
6 explicit affected versions
12 explicit affected versions
16 explicit affected versions
6 explicit affected versions
50 explicit affected versions
36 explicit affected versions
57 explicit affected versions
47 explicit affected versions
36 explicit affected versions
7 explicit affected versions
43 explicit affected versions
191 explicit affected versions
7 explicit affected versions
44 explicit affected versions
84 explicit affected versions
9 explicit affected versions
67 explicit affected versions
35 explicit affected versions
3 explicit affected versions
14 explicit affected versions
18 explicit affected versions
5 explicit affected versions
98 explicit affected versions
30 explicit affected versions
86 explicit affected versions
13 explicit affected versions
4 explicit affected versions
23 explicit affected versions
103 explicit affected versions
1 explicit affected versions
21 explicit affected versions
9 explicit affected versions
16 explicit affected versions
10 explicit affected versions
41 explicit affected versions
7 explicit affected versions
12 explicit affected versions
34 explicit affected versions
12 explicit affected versions
10 explicit affected versions
7 explicit affected versions
74 explicit affected versions
12 explicit affected versions
89 explicit affected versions
97 explicit affected versions
12 explicit affected versions
85 explicit affected versions
102 explicit affected versions
10 explicit affected versions
10 explicit affected versions
169 explicit affected versions
37 explicit affected versions
9 explicit affected versions
10 explicit affected versions
23 explicit affected versions
1 explicit affected versions
27 explicit affected versions
26 explicit affected versions
13 explicit affected versions
4 explicit affected versions
1 explicit affected versions
29 explicit affected versions
78 explicit affected versions
13 explicit affected versions
47 explicit affected versions
1 explicit affected versions
73 explicit affected versions
45 explicit affected versions
89 explicit affected versions
7 explicit affected versions
33 explicit affected versions
23 explicit affected versions
10 explicit affected versions
96 explicit affected versions
11 explicit affected versions
12 explicit affected versions
119 explicit affected versions
7 explicit affected versions
12 explicit affected versions
88 explicit affected versions
2 explicit affected versions
36 explicit affected versions
28 explicit affected versions
112 explicit affected versions
44 explicit affected versions
146 explicit affected versions
132 explicit affected versions
10 explicit affected versions
26 explicit affected versions
23 explicit affected versions
1 explicit affected versions
13 explicit affected versions
119 explicit affected versions
47 explicit affected versions
16 explicit affected versions
47 explicit affected versions
37 explicit affected versions
3 explicit affected versions
73 explicit affected versions
1 explicit affected versions
2 explicit affected versions
54 explicit affected versions
51 explicit affected versions
72 explicit affected versions
1 explicit affected versions
12 explicit affected versions
34 explicit affected versions
25 explicit affected versions
20 explicit affected versions
1 explicit affected versions
1 explicit affected versions
76 explicit affected versions
8 explicit affected versions
8 explicit affected versions
5 explicit affected versions
8 explicit affected versions
1 explicit affected versions
10 explicit affected versions
9 explicit affected versions
77 explicit affected versions
13 explicit affected versions
41 explicit affected versions
7 explicit affected versions
74 explicit affected versions
39 explicit affected versions
10 explicit affected versions
12 explicit affected versions
12 explicit affected versions
76 explicit affected versions
44 explicit affected versions
16 explicit affected versions
3 explicit affected versions
13 explicit affected versions
26 explicit affected versions
33 explicit affected versions
37 explicit affected versions
14 explicit affected versions
38 explicit affected versions
37 explicit affected versions
9 explicit affected versions
36 explicit affected versions
11 explicit affected versions
44 explicit affected versions
8 explicit affected versions
7 explicit affected versions
18 explicit affected versions
79 explicit affected versions
48 explicit affected versions
123 explicit affected versions
102 explicit affected versions
4 explicit affected versions
1 explicit affected versions
1 explicit affected versions
42 explicit affected versions
95 explicit affected versions
10 explicit affected versions
43 explicit affected versions
42 explicit affected versions
126 explicit affected versions
146 explicit affected versions
10 explicit affected versions
8 explicit affected versions
14 explicit affected versions
77 explicit affected versions
4 explicit affected versions
66 explicit affected versions
7 explicit affected versions
1 explicit affected versions
49 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: llc: call sock_orphan() at release time syzbot reported an interesting trace [1] caused by a stale sk->sk_wq pointer in a closed llc socket. In commit ff7b11aa481f ("net: socket: set sock->sk to NULL after calling proto_ops::release()") Eric Biggers hinted that some protocols are missing a sock_orphan(), we need to perform a full audit. In net-next, I plan to clear sock->sk from sock_orphan() and amend Eric patch to add a warning. [1] BUG: KASAN: slab-use-after-free in list_empty include/linux/list.h:373 [inline] BUG: KASAN: slab-use-after-free in waitqueue_active include/linux/wait.h:127 [inline] BUG: KASAN: slab-use-after-free in sock_def_write_space_wfree net/core/sock.c:3384 [inline] BUG: KASAN: slab-use-after-free in sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468 Read of size 8 at addr ffff88802f4fc880 by task ksoftirqd/1/27 CPU: 1 PID: 27 Comm: ksoftirqd/1 Not tainted 6.8.0-rc1-syzkaller-00049-g6098d87eaf31 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc4/0x620 mm/kasan/report.c:488 kasan_report+0xda/0x110 mm/kasan/report.c:601 list_empty include/linux/list.h:373 [inline] waitqueue_active include/linux/wait.h:127 [inline] sock_def_write_space_wfree net/core/sock.c:3384 [inline] sock_wfree+0x9a8/0x9d0 net/core/sock.c:2468 skb_release_head_state+0xa3/0x2b0 net/core/skbuff.c:1080 skb_release_all net/core/skbuff.c:1092 [inline] napi_consume_skb+0x119/0x2b0 net/core/skbuff.c:1404 e1000_unmap_and_free_tx_resource+0x144/0x200 drivers/net/ethernet/intel/e1000/e1000_main.c:1970 e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3860 [inline] e1000_clean+0x4a1/0x26e0 drivers/net/ethernet/intel/e1000/e1000_main.c:3801 __napi_poll.constprop.0+0xb4/0x540 net/core/dev.c:6576 napi_poll net/core/dev.c:6645 [inline] net_rx_action+0x956/0xe90 net/core/dev.c:6778 __do_softirq+0x21a/0x8de kernel/softirq.c:553 run_ksoftirqd kernel/softirq.c:921 [inline] run_ksoftirqd+0x31/0x60 kernel/softirq.c:913 smpboot_thread_fn+0x660/0xa10 kernel/smpboot.c:164 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 </TASK> Allocated by task 5167: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:314 [inline] __kasan_slab_alloc+0x81/0x90 mm/kasan/common.c:340 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc_lru+0x142/0x6f0 mm/slub.c:3879 alloc_inode_sb include/linux/fs.h:3019 [inline] sock_alloc_inode+0x25/0x1c0 net/socket.c:308 alloc_inode+0x5d/0x220 fs/inode.c:260 new_inode_pseudo+0x16/0x80 fs/inode.c:1005 sock_alloc+0x40/0x270 net/socket.c:634 __sock_create+0xbc/0x800 net/socket.c:1535 sock_create net/socket.c:1622 [inline] __sys_socket_create net/socket.c:1659 [inline] __sys_socket+0x14c/0x260 net/socket.c:1706 __do_sys_socket net/socket.c:1720 [inline] __se_sys_socket net/socket.c:1718 [inline] __x64_sys_socket+0x72/0xb0 net/socket.c:1718 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b Freed by task 0: kasan_save_stack+0x33/0x50 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3f/0x60 mm/kasan/generic.c:640 poison_slab_object mm/kasan/common.c:241 [inline] __kasan_slab_free+0x121/0x1b0 mm/kasan/common.c:257 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2121 [inlin ---truncated---
05 / REFERENCES
Further evidence
- https://git.kernel.org/linus/aa2b2eb3934859904c287bf5434647ba72e14c1c
- https://git.kernel.org/stable/c/3151051b787f7cd7e3329ea0016eb9113c248812
- https://git.kernel.org/stable/c/64babb17e8150771c58575d8f93a35c5296b499f
- https://git.kernel.org/stable/c/6b950c712a9a05cdda4aea7fcb2848766576c11b
- https://git.kernel.org/stable/c/8e51f084b5716653f19e291ed5f026791d4b3ed4
- https://git.kernel.org/stable/c/9c333d9891f34cea8af1b229dc754552304c8eee
- https://git.kernel.org/stable/c/aa2b2eb3934859904c287bf5434647ba72e14c1c
- https://git.kernel.org/stable/c/d0b5b1f12429df3cd9751ab8b2f53729b77733b7
- https://git.kernel.org/stable/c/dbc1b89981f9c5360277071d33d7f04a43ffda4a
- https://ubuntu.com/security/CVE-2024-26625
- https://ubuntu.com/security/notices/USN-6688-1
- https://ubuntu.com/security/notices/USN-6766-1
- https://ubuntu.com/security/notices/USN-6766-2
- https://ubuntu.com/security/notices/USN-6766-3
- https://ubuntu.com/security/notices/USN-6767-1
- https://ubuntu.com/security/notices/USN-6767-2
- https://ubuntu.com/security/notices/USN-6795-1
- https://ubuntu.com/security/notices/USN-6818-1
- https://ubuntu.com/security/notices/USN-6818-2
- https://ubuntu.com/security/notices/USN-6818-3
- https://ubuntu.com/security/notices/USN-6818-4
- https://ubuntu.com/security/notices/USN-6819-1
- https://ubuntu.com/security/notices/USN-6819-2
- https://ubuntu.com/security/notices/USN-6819-3
- https://ubuntu.com/security/notices/USN-6819-4
- https://ubuntu.com/security/notices/USN-6828-1
- https://ubuntu.com/security/notices/USN-7183-1
- https://ubuntu.com/security/notices/USN-7184-1
- https://ubuntu.com/security/notices/USN-7185-1
- https://ubuntu.com/security/notices/USN-7185-2
- https://www.cve.org/CVERecord?id=CVE-2024-26625