5.5

CVE-2022-49558

netfilter: nf_tables: double hook unregistration in netns path

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: double hook unregistration in netns path

__nft_release_hooks() is called from pre_netns exit path which
unregisters the hooks, then the NETDEV_UNREGISTER event is triggered
which unregisters the hooks again.

[  565.221461] WARNING: CPU: 18 PID: 193 at net/netfilter/core.c:495 __nf_unregister_net_hook+0x247/0x270
[...]
[  565.246890] CPU: 18 PID: 193 Comm: kworker/u64:1 Tainted: G            E     5.18.0-rc7+ #27
[  565.253682] Workqueue: netns cleanup_net
[  565.257059] RIP: 0010:__nf_unregister_net_hook+0x247/0x270
[...]
[  565.297120] Call Trace:
[  565.300900]  <TASK>
[  565.304683]  nf_tables_flowtable_event+0x16a/0x220 [nf_tables]
[  565.308518]  raw_notifier_call_chain+0x63/0x80
[  565.312386]  unregister_netdevice_many+0x54f/0xb50

Unregister and destroy netdev hook from netns pre_exit via kfree_rcu
so the NETDEV_UNREGISTER path see unregistered hooks.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.4.99 < 5.4.262
Linux ≫ Linux Kernel Version >= 5.10.17 < 5.10.198
Linux ≫ Linux Kernel Version >= 5.11.1 < 5.15.45
Linux ≫ Linux Kernel Version >= 5.16 < 5.17.13
Linux ≫ Linux Kernel Version >= 5.18 < 5.18.2
Linux ≫ Linux Kernel Version5.11 Update-
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.25% 0.166
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82
Patch
https://git.kernel.org/stable/c/86c0154f4c3a56c5db8b9dd09e3ce885382c2c19
Patch
https://git.kernel.org/stable/c/9c413a8c8bb49cc16796371805ecb260e885bb2b
Patch
https://git.kernel.org/stable/c/a3940dcf552f2393d1e8f263b386593f98abe829
Patch
https://git.kernel.org/stable/c/b09e6ccf0d12f9356e8e3508d3e3dce126298538
Patch
https://git.kernel.org/stable/c/f9a43007d3f7ba76d5e7f9421094f00f2ef202f8
Patch