CVE-2023-4147

Kernel: netfilter: nf_tables_newrule when adding a rule with nfta_rule_chain_id leads to use-after-free

Description

A use-after-free flaw was found in the Linux kernel’s Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.16%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2023:5069 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:5091 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:5093 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:7382 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:7389 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2023:7411 third party advisory vendor advisory
https://access.redhat.com/security/cve/CVE-2023-4147 patch third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2225239 patch third party advisory issue tracking
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0ebc1064e4874d5987722a2ddbc18f94aa53b211 patch mailing list
https://www.spinics.net/lists/stable/msg671573.html patch mailing list
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
https://security.netapp.com/advisory/ntap-20231020-0006/
https://www.debian.org/security/2023/dsa-5480
https://www.debian.org/security/2023/dsa-5492

Frequently Asked Questions

What is the severity of CVE-2023-4147?
CVE-2023-4147 has been scored as a high severity vulnerability.
How to fix CVE-2023-4147?
To fix CVE-2023-4147, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4147 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-4147 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4147?
CVE-2023-4147 affects Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8.
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