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—
Author | Note |
---|---|
rodrigo-zaiden | USN-6765-1 for linux-oem-6.5 wrongly stated that this CVE was fixed in version 6.5.0-1022.23. The mentioned notice was revoked and the state of the fix for linux-oem-6.5 was recovered to the previous state. |
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 20.04 | noarch | linux | < 5.4.0-181.201 | UNKNOWN |
ubuntu | 22.04 | noarch | linux | < 5.15.0-106.116 | UNKNOWN |
ubuntu | 23.10 | noarch | linux | < 6.5.0-41.41 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws | < 5.4.0-1124.134 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws | < 5.15.0-1061.67 | UNKNOWN |
ubuntu | 23.10 | noarch | linux-aws | < 6.5.0-1021.21 | UNKNOWN |
ubuntu | 20.04 | noarch | linux-aws-5.15 | < 5.15.0-1061.67~20.04.1 | UNKNOWN |
ubuntu | 18.04 | noarch | linux-aws-5.4 | < 5.4.0-1124.134~18.04.1 | UNKNOWN |
ubuntu | 22.04 | noarch | linux-aws-6.5 | < any | UNKNOWN |
ubuntu | 20.04 | noarch | linux-azure | < 5.4.0-1129.136 | UNKNOWN |
git.kernel.org/linus/aa2b2eb3934859904c287bf5434647ba72e14c1c (6.8-rc3)
git.kernel.org/stable/c/3151051b787f7cd7e3329ea0016eb9113c248812
git.kernel.org/stable/c/64babb17e8150771c58575d8f93a35c5296b499f
git.kernel.org/stable/c/6b950c712a9a05cdda4aea7fcb2848766576c11b
git.kernel.org/stable/c/8e51f084b5716653f19e291ed5f026791d4b3ed4
git.kernel.org/stable/c/9c333d9891f34cea8af1b229dc754552304c8eee
git.kernel.org/stable/c/aa2b2eb3934859904c287bf5434647ba72e14c1c
git.kernel.org/stable/c/d0b5b1f12429df3cd9751ab8b2f53729b77733b7
git.kernel.org/stable/c/dbc1b89981f9c5360277071d33d7f04a43ffda4a
launchpad.net/bugs/cve/CVE-2024-26625
nvd.nist.gov/vuln/detail/CVE-2024-26625
security-tracker.debian.org/tracker/CVE-2024-26625
ubuntu.com/security/notices/USN-6688-1
ubuntu.com/security/notices/USN-6766-1
ubuntu.com/security/notices/USN-6766-2
ubuntu.com/security/notices/USN-6766-3
ubuntu.com/security/notices/USN-6767-1
ubuntu.com/security/notices/USN-6767-2
ubuntu.com/security/notices/USN-6795-1
ubuntu.com/security/notices/USN-6818-1
ubuntu.com/security/notices/USN-6818-2
ubuntu.com/security/notices/USN-6818-3
ubuntu.com/security/notices/USN-6818-4
ubuntu.com/security/notices/USN-6819-1
ubuntu.com/security/notices/USN-6819-2
ubuntu.com/security/notices/USN-6819-3
ubuntu.com/security/notices/USN-6819-4
ubuntu.com/security/notices/USN-6828-1
www.cve.org/CVERecord?id=CVE-2024-26625