CVE-2023-4147

moderate-risk
Published 2023-08-07

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.

Do I need to act?

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0.16% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (13)

Affected Vendors

Debian Redhat Linux Fedoraproject

References (24)

Third Party Advisory https://access.redhat.com/errata/RHSA-2023:5069
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:5091
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:5093
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:7382
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:7389
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:7411
Patch https://access.redhat.com/security/cve/CVE-2023-4147
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2225239
Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0e...
Mailing List https://www.spinics.net/lists/stable/msg671573.html
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:5069
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:5091
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:5093
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:7382
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:7389
Third Party Advisory https://access.redhat.com/errata/RHSA-2023:7411
Patch https://access.redhat.com/security/cve/CVE-2023-4147
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=2225239
Mailing List https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0e...
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
and 4 more references
42
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 17/34 · Moderate