Security readout for executives and security teams
Plain-English summary
CVE-2023-26606 is a Linux kernel memory safety flaw in the ntfs3 filesystem code. A local low-privileged user could potentially cause serious impact to confidentiality, integrity, and availability. The bundle does not show internet-routable exposure or active exploitation evidence.
Executive priority
Treat as high priority for Linux systems with local multi-user access or sensitive workloads. It is less urgent than a remotely exploitable KEV-listed issue, but kernel memory corruption with high impact should be remediated through normal emergency or accelerated patch windows.
Technical view
The issue is a CWE-416 use-after-free in ntfs_trim_fs within fs/ntfs3/bitmap.c, reported for Linux kernel 6.0.8. CVSS 3.1 is 7.8: local attack vector, low complexity, low privileges required, no user interaction, and high C/I/A impact.
Likely exposure
Primary exposure is Linux systems running kernel 6.0.8 with the vulnerable ntfs3 code present. Practical risk is highest where untrusted local users, shared workloads, or container escape-adjacent local access are relevant. The provided affected-product data is incomplete.
Exploitation context
CISA KEV status is false, and the source bundle provides no evidence of active exploitation. The CVSS vector indicates local exploitation requiring low privileges, not remote unauthenticated exploitation. No exploit maturity or weaponized activity is cited.
Researcher notes
The source bundle identifies the vulnerable function, CWE, CVSS vector, and upstream commit reference, but affected product/version data is sparse. Avoid assuming all Linux versions are affected. Validate exposure through vendor kernels, backports, ntfs3 availability, and advisory mapping.
Mitigation direction
- Inventory Linux hosts and appliances for kernel 6.0.8 exposure.
- Check distribution and vendor advisories for patched kernel packages.
- Prioritize updates that include upstream commit 557d19675a470bb0a98beccec38c5dc3735c20fa.
- Limit untrusted local shell access on affected systems until patched.
- Review NetApp advisory applicability if NetApp products are in scope.
Validation and detection
- Confirm running kernel versions on Linux assets.
- Check whether ntfs3 support is present or used on those systems.
- Verify vendor kernel changelogs reference the upstream fixing commit or CVE.
- Confirm patched systems are no longer running vulnerable kernel builds.
- Document exceptions where vendor guidance is unavailable or inconclusive.
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 lookupCVE-2023-26606 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:L/PR:L/UI:N/S:U/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: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
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.