CVE-2023-4147
HIGH severity · CVSS 7.8 · Use-after-free
7.8CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)1%
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products we track (4)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://access.redhat.com/security/cve/CVE-2023-4147 ↗
Additional information
- NVD record
- https://access.redhat.com/security/cve/CVE-2023-4147Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=2225239Patch
- https://access.redhat.com/errata/RHSA-2023:5069Advisory
- https://access.redhat.com/errata/RHSA-2023:5091Advisory
- https://access.redhat.com/errata/RHSA-2023:5093Advisory
- https://access.redhat.com/errata/RHSA-2023:7382Advisory
- https://access.redhat.com/errata/RHSA-2023:7389Advisory
- https://access.redhat.com/errata/RHSA-2023:7411Advisory