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CVE PROGRAM SOURCE RECORDUnscored

CVE-2022-49558

netfilter: nf_tables: double hook unregistration in netns path

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • b110391d1e806167254d3c7ae5d637191d913175 to < b09e6ccf0d12f9356e8e3508d3e3dce126298538affected
  • 0a0e5d47670b753d3dbf88f3c77a97a30864d9bd to < 3fac8ce48fa9fd61ee9056d3ed48b2edefca8b82affected
  • 767d1216bff82507c945e92fe719dff2083bb2f4 to < 9c413a8c8bb49cc16796371805ecb260e885bb2baffected
  • 767d1216bff82507c945e92fe719dff2083bb2f4 to < a3940dcf552f2393d1e8f263b386593f98abe829affected
  • 767d1216bff82507c945e92fe719dff2083bb2f4 to < 86c0154f4c3a56c5db8b9dd09e3ce885382c2c19affected
  • 767d1216bff82507c945e92fe719dff2083bb2f4 to < f9a43007d3f7ba76d5e7f9421094f00f2ef202f8affected
  • 5.4.99 to < 5.4.262affected
  • 5.10.17 to < 5.10.198affected

Linux Linux

Default version status: affected

  • 5.11affected
  • 0 to < 5.11unaffected
  • 5.4.262 to ≤ 5.4.*unaffected
  • 5.10.198 to ≤ 5.10.*unaffected
  • 5.15.45 to ≤ 5.15.*unaffected
  • 5.17.13 to ≤ 5.17.*unaffected
  • 5.18.2 to ≤ 5.18.*unaffected
  • 5.19 to ≤ *unaffected

References