Bug 2237750 (CVE-2023-3777) - CVE-2023-3777 kernel: use-after-free in netfilter: nf_tables
Summary: CVE-2023-3777 kernel: use-after-free in netfilter: nf_tables
Keywords:
Status: NEW
Alias: CVE-2023-3777
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 2237754
TreeView+ depends on / blocked
 
Reported: 2023-09-06 17:37 UTC by juneau
Modified: 2024-02-05 17:04 UTC (History)
41 users (show)

Fixed In Version: Kernel 6.5-rc3
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Linux kernel's netfilter: nf_tables component, which can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound, and the chain's owner rule can release the objects in certain circumstances.
Clone Of:
Environment:
Last Closed:
Embargoed:


Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2024:0610 0 None None None 2024-01-30 14:48:43 UTC
Red Hat Product Errata RHBA-2024:0611 0 None None None 2024-01-30 14:53:07 UTC
Red Hat Product Errata RHBA-2024:0688 0 None None None 2024-02-05 17:04:16 UTC
Red Hat Product Errata RHSA-2024:0431 0 None None None 2024-01-24 15:24:42 UTC
Red Hat Product Errata RHSA-2024:0432 0 None None None 2024-01-24 15:25:29 UTC
Red Hat Product Errata RHSA-2024:0439 0 None None None 2024-01-24 16:36:19 UTC
Red Hat Product Errata RHSA-2024:0448 0 None None None 2024-01-24 16:38:06 UTC
Red Hat Product Errata RHSA-2024:0461 0 None None None 2024-01-24 16:28:56 UTC

Description juneau 2023-09-06 17:37:02 UTC
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.

When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.

We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8
https://kernel.dance/6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8

Comment 8 errata-xmlrpc 2024-01-24 15:24:39 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2024:0431 https://access.redhat.com/errata/RHSA-2024:0431

Comment 9 errata-xmlrpc 2024-01-24 15:25:26 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2024:0432 https://access.redhat.com/errata/RHSA-2024:0432

Comment 10 errata-xmlrpc 2024-01-24 16:28:53 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:0461 https://access.redhat.com/errata/RHSA-2024:0461

Comment 11 errata-xmlrpc 2024-01-24 16:36:16 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:0439 https://access.redhat.com/errata/RHSA-2024:0439

Comment 12 errata-xmlrpc 2024-01-24 16:38:03 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:0448 https://access.redhat.com/errata/RHSA-2024:0448


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