Use After Free in Linux Kernel
CVE-2023-3269
A vulnerability exists in the memory management subsystem of the Linux kernel. The lock handling for accessing and updating virtual memory areas (VMAs) is incorrect, leading to use-after-free problems. This issue can be successfully exploited to execute arbitrary kernel code, escalate containers, and gain root privileges.
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:H/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
- Linux Kernel — versions 6.4
- Fedora
- Fedoraproject Fedora — versions 37, 38
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Enterprise Linux — versions 6.0, 7.0, 8.0
- Kernel
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/security/cve/CVE-2023-3269 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Patch, Third Party Advisory, Issue Tracking)
- www.openwall.com/lists/oss-security/2023/07/05/1 (Mailing List)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List, Third Party Advisory)
- seclists.org/fulldisclosure/2023/Jul/43 (Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2023/07/28/1 (Mailing List)
- www.openwall.com/lists/oss-security/2023/08/25/1 (Mailing List)
- www.openwall.com/lists/oss-security/2023/08/25/4 (Mailing List)
- security.netapp.com/advisory/ntap-20230908-0001/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-3269?
- CVE-2023-3269 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.8/10. Published 2023-07-11.
- How severe is CVE-2023-3269?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2023-3269 known to be exploited?
- 22 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.