Bug 2255653 (CVE-2024-0193) - CVE-2024-0193 kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation
Summary: CVE-2024-0193 kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync...
Keywords:
Status: NEW
Alias: CVE-2024-0193
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2256447
Blocks: 2255655
TreeView+ depends on / blocked
 
Reported: 2023-12-22 18:42 UTC by Mauro Matteo Cascella
Modified: 2024-04-12 21:19 UTC (History)
47 users (show)

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Doc Text:
A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.
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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2024:1336 0 None None None 2024-03-14 15:40:57 UTC
Red Hat Product Errata RHBA-2024:1379 0 None None None 2024-03-19 15:01:01 UTC
Red Hat Product Errata RHSA-2024:1018 0 None None None 2024-02-28 12:41:48 UTC
Red Hat Product Errata RHSA-2024:1019 0 None None None 2024-02-28 12:34:25 UTC
Red Hat Product Errata RHSA-2024:1248 0 None None None 2024-03-12 00:47:01 UTC

Description Mauro Matteo Cascella 2023-12-22 18:42:28 UTC 
A use-after-free vulnerability was discovered within the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This causes a use-after-free on an NFT_CHAIN object or NFT_OBJECT object. A local unprivileged user could use this vulnerability to escalate their privileges on the system.
Comment 6 Mauro Matteo Cascella 2024-01-02 11:00:19 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2256447]
Comment 7 Mauro Matteo Cascella 2024-01-02 11:00:46 UTC 
Upstream patch (Netfilter tree):
https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git/commit/?id=7315dc1e122c85ffdfc8defffbb8f8b616c2eb1a
Comment 13 Justin M. Forbes 2024-01-15 19:30:23 UTC 
This was fixed for Fedora with the 6.6.10 stable kernel updates.
Comment 23 errata-xmlrpc 2024-02-28 12:34:21 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:1019 https://access.redhat.com/errata/RHSA-2024:1019
Comment 24 errata-xmlrpc 2024-02-28 12:41:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:1018 https://access.redhat.com/errata/RHSA-2024:1018
Comment 25 errata-xmlrpc 2024-03-12 00:46:57 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:1248 https://access.redhat.com/errata/RHSA-2024:1248
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