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ubuntucveUbuntu.comUB:CVE-2024-36005
HistoryMay 20, 2024 - 12:00 a.m.

CVE-2024-36005

2024-05-2000:00:00
ubuntu.com
ubuntu.com
3
linux kernel
netfilter
vulnerability
nf_tables
dormant flag
kernel panic
6.9.0-rc3
cve-2024-36005

6.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.4%

In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: honor table dormant flag from netdev release event
path Check for table dormant flag otherwise netdev release event path tries
to unregister an already unregistered hook. [524854.857999] ------------[
cut here ]------------ [524854.858010] WARNING: CPU: 0 PID: 3386599 at
net/netfilter/core.c:501 __nf_unregister_net_hook+0x21a/0x260 […]
[524854.858848] CPU: 0 PID: 3386599 Comm: kworker/u32:2 Not tainted
6.9.0-rc3+ #365 [524854.858869] Workqueue: netns cleanup_net
[524854.858886] RIP: 0010:__nf_unregister_net_hook+0x21a/0x260
[524854.858903] Code: 24 e8 aa 73 83 ff 48 63 43 1c 83 f8 01 0f 85 3d ff ff
ff e8 98 d1 f0 ff 48 8b 3c 24 e8 8f 73 83 ff 48 63 43 1c e9 26 ff ff ff
<0f> 0b 48 83 c4 18 48 c7 c7 00 68 e9 82 5b 5d 41 5c 41 5d 41 5e 41
[524854.858914] RSP: 0018:ffff8881e36d79e0 EFLAGS: 00010246 [524854.858926]
RAX: 0000000000000000 RBX: ffff8881339ae790 RCX: ffffffff81ba524a
[524854.858936] RDX: dffffc0000000000 RSI: 0000000000000008 RDI:
ffff8881c8a16438 [524854.858945] RBP: ffff8881c8a16438 R08:
0000000000000001 R09: ffffed103c6daf34 [524854.858954] R10:
ffff8881e36d79a7 R11: 0000000000000000 R12: 0000000000000005
[524854.858962] R13: ffff8881c8a16000 R14: 0000000000000000 R15:
ffff8881351b5a00 [524854.858971] FS: 0000000000000000(0000)
GS:ffff888390800000(0000) knlGS:0000000000000000 [524854.858982] CS: 0010
DS: 0000 ES: 0000 CR0: 0000000080050033 [524854.858991] CR2:
00007fc9be0f16f4 CR3: 00000001437cc004 CR4: 00000000001706f0
[524854.859000] Call Trace: [524854.859006] <TASK> [524854.859013] ?
__warn+0x9f/0x1a0 [524854.859027] ? __nf_unregister_net_hook+0x21a/0x260
[524854.859044] ? report_bug+0x1b1/0x1e0 [524854.859060] ?
handle_bug+0x3c/0x70 [524854.859071] ? exc_invalid_op+0x17/0x40
[524854.859083] ? asm_exc_invalid_op+0x1a/0x20 [524854.859100] ?
__nf_unregister_net_hook+0x6a/0x260 [524854.859116] ?
__nf_unregister_net_hook+0x21a/0x260 [524854.859135]
nf_tables_netdev_event+0x337/0x390 [nf_tables] [524854.859304] ?
__pfx_nf_tables_netdev_event+0x10/0x10 [nf_tables] [524854.859461] ?
packet_notifier+0xb3/0x360 [524854.859476] ?
_raw_spin_unlock_irqrestore+0x11/0x40 [524854.859489] ?
dcbnl_netdevice_event+0x35/0x140 [524854.859507] ?
__pfx_nf_tables_netdev_event+0x10/0x10 [nf_tables] [524854.859661]
notifier_call_chain+0x7d/0x140 [524854.859677]
unregister_netdevice_many_notify+0x5e1/0xae0

6.7 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

10.4%