Use After Free in Linux Kernel
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.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: -0.000
Affected products
- Linux Kernel — versions 6.5
- Debian Linux — versions 10.0, 11.0, 12.0
- Fedoraproject Fedora — versions 38
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 0:5.14.0-284.30.1.el9_2, 0:5.14.0-284.30.1.rt14.315.el9_2
- Red Hat Enterprise Linux 9.0 Extended Update Support — versions 0:5.14.0-70.80.1.el9_0, 0:5.14.0-70.80.1.rt21.151.el9_0
- Red Hat Enterprise Linux — versions 9.0
- Red Hat Enterprise Linux Eus — versions 9.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2023:5069 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:5091 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:5093 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7382 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7389 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2023:7411 (vendor-advisory, Third Party Advisory)
- access.redhat.com/security/cve/CVE-2023-4147 (Patch, Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Mailing List)
- www.spinics.net/lists/stable/msg671573.html (Patch, Mailing List)
Frequently asked questions
- What is CVE-2023-4147?
- CVE-2023-4147 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-08-07.
- How severe is CVE-2023-4147?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-4147 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.