Security readout for executives and security teams
Plain-English summary
CVE-2023-3269 is a Linux kernel memory-management flaw that can let a local low-privileged user become root or escape container boundaries. It is serious for shared Linux hosts and container platforms. Red Hat lists RHEL 6-9 kernel packages as unaffected, while Fedora kernel is listed affected.
Executive priority
Treat as high priority where affected Linux kernels support shared access or containers. Business risk is privilege escalation to root, not remote initial compromise. Patch or vendor-validate quickly, but do not assume RHEL fleets are affected when Red Hat lists them unaffected.
Technical view
The issue is incorrect VMA lock handling during virtual memory area traversal, causing use-after-free conditions. The CVSS vector is local, high complexity, low privileges, no user interaction, scope changed, with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most relevant on affected Linux kernels, especially Fedora systems and multi-user or containerized hosts. The bundle does not provide exact vulnerable kernel version ranges. RHEL 6-9 kernel and kernel-rt entries are listed as unaffected by Red Hat.
Exploitation context
The source bundle says successful exploitation can execute arbitrary kernel code, escalate containers, and gain root privileges. CISA KEV is false, and the provided sources do not establish active exploitation in the wild.
Researcher notes
Evidence supports a kernel use-after-free in VMA locking with local privilege escalation impact. Version granularity is incomplete in the supplied bundle. Avoid assuming affected products beyond listed kernel/Fedora entries and referenced vendor advisories.
Mitigation direction
- Identify Linux hosts running affected vendor kernel packages.
- Apply vendor-supported kernel updates when fixed packages are available.
- Prioritize container hosts, shared servers, and untrusted-user environments.
- For RHEL 6-9, document Red Hat's unaffected status.
- Check NetApp and other vendor advisories for product-specific guidance.
Validation and detection
- Inventory kernel package names, versions, and distribution families.
- Compare results against Red Hat, Fedora, and vendor advisories.
- Confirm container-host kernels are covered, not only container images.
- Verify patched hosts rebooted into the updated kernel.
- Record cases where vendor version guidance is incomplete.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-416: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupPrivilege behavior lookup
The CVE wording references privilege impact, so privilege escalation and authorization behavior review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-3269 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H1.16Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2023-3269CVE reference · vdb-entry, x_refsource_REDHAT
- RHBZ#2215268CVE reference · issue-tracking, x_refsource_REDHAT
- https://www.openwall.com/lists/oss-security/2023/07/05/1CVE reference
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U6AAA64CUPSMBW6XDTXPQJ3KQWYQ4K7L/CVE reference
- https://security.netapp.com/advisory/ntap-20230908-0001/CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Use After Free
Use After Free represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.