Security readout for executives and security teams
CVE-2023-32629 is a local privilege escalation flaw in Ubuntu kernels. A user who already has low-level local access could abuse an OverlayFS permission-check weakness to gain higher privileges. It is not described as remotely exploitable, but it matters on shared, multi-user, build, or workload-hosting Ubuntu systems. Exposure is most likely on Ubuntu systems running affected Canonical kernel packages listed in USN-6250-1. Business risk rises where untrusted users, services, jobs, or hosted workloads can execute local code on the same host. Treat this as a high-priority Linux patching issue for Ubuntu fleets, especially where local access is shared or workloads are isolated by the host. It is not shown as actively exploited in the supplied sources, but successful exploitation could mean full host compromise. Mitigation focus: Apply Canonical kernel updates referenced in USN-6250-1.; Reboot systems after kernel updates unless covered by validated livepatch guidance.; Check Canonical livepatch notice applicability if using kernel livepatching..
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
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ATT&CK lookup starting points
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CWE-863: Authorization and privilege behavior lookup
Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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-2023-32629 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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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:L/PR:L/UI:N/S:U/C:H/I:H/A:H1.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://ubuntu.com/security/notices/USN-6250-1CVE reference · vendor-advisory
- https://lists.ubuntu.com/archives/kernel-team/2023-July/140920.htmlCVE reference · mailing-list
- https://wiz.io/blog/ubuntu-overlayfs-vulnerabilityCVE reference · technical-description
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32629CVE reference · issue-tracking
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.
Incorrect Authorization
Incorrect Authorization represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.