CVE-2023-4147
HIGHCVSS 7.8/10EPSS 0.56%
Last modified
CVE-2023-4147 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Linux | Linux Kernel | >= 5.9, < 5.10.190 | — |
| Linux | Linux Kernel | >= 5.11, < 5.15.124 | — |
| Linux | Linux Kernel | >= 5.16, < 6.1.43 | — |
| Linux | Linux Kernel | >= 6.2, < 6.4.8 | — |
| Linux | Linux Kernel | 6.5 | Rc1 |
| Fedoraproject | Fedora | 38 | — |
| Redhat | Enterprise Linux | 9.0 | — |
| Redhat | Enterprise Linux Eus | 9.2 | — |
| Redhat | Enterprise Linux For Real Time | 9.0 | — |
| Redhat | Enterprise Linux For Real Time For Nfv | 9.0 | — |
| Redhat | Enterprise Linux Server Aus | 9.2 | — |
| Debian | Debian Linux | 10.0 | — |
| Debian | Debian Linux | 11.0 | — |
| Debian | Debian Linux | 12.0 | — |
References
- https://access.redhat.com/errata/RHSA-2023:5069Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5091Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5093Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7382Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7389Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7411Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4147Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2225239Issue Tracking, Patch, Third Party Advisory
- https://www.spinics.net/lists/stable/msg671573.htmlMailing List, Patch
- https://access.redhat.com/errata/RHSA-2023:5069Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5091Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:5093Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7382Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7389Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7411Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-4147Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2225239Issue Tracking, Patch, Third Party Advisory
- https://www.spinics.net/lists/stable/msg671573.htmlMailing List, Patch
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-4147?
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.
How severe is CVE-2023-4147?
CVE-2023-4147 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.
How do I fix CVE-2023-4147?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2023-4147?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST