Security readout for executives and security teams
Plain-English summary
CVE-2023-6270 is a Linux kernel memory safety flaw in the ATA over Ethernet driver. A local low-privileged attacker could race kernel object cleanup and reuse, potentially crashing the host or gaining code execution. The source bundle lists RHEL 6/7 kernel packages as affected or unknown and RHEL 8/9 as unaffected.
Executive priority
Prioritize this for legacy Linux estates and shared systems with local user access. It is high severity, but not remotely exploitable according to the supplied CVSS vector and has no cited active exploitation evidence here.
Technical view
The flaw is a CWE-416 use-after-free in aoecmd_cfg_pkts(). Improper reference counting on struct net_device can race freeing that object against later access through the skbtxq global queue. CVSS is 7.0 high, local attack vector, high complexity, low privileges, no user interaction, with high CIA impact.
Likely exposure
Exposure is most relevant on Linux systems using affected AoE kernel code, especially RHEL 6/7 kernel or kernel-rt packages. RHEL 8 and 9 are listed as unaffected. Debian LTS advisories are referenced, but this bundle does not enumerate Debian affected versions.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation evidence. Exploitation is local, requires low privileges, and has high attack complexity. Impact could be denial of service or potential code execution if the race is won.
Researcher notes
Key evidence is the AoE driver use-after-free, refcount mishandling on struct net_device, and skbtxq race. The bundle gives product status but limited fixed-version detail. Avoid assuming Debian impact beyond the referenced LTS advisories without reading those advisories directly.
Mitigation direction
- Check Red Hat and Debian advisories for fixed kernel packages and support status.
- Patch affected RHEL 6/7 kernel and kernel-rt systems where vendor fixes are available.
- Reduce exposure to local low-privileged users on systems that load the AoE driver.
- If patching is delayed, follow vendor guidance for temporary controls; none is named in the bundle.
Validation and detection
- Inventory Linux hosts by distribution, release, kernel package, and AoE driver usage.
- Compare deployed kernels against Red Hat CVE status and referenced Debian LTS advisories.
- Confirm RHEL 8 and 9 systems match the listed unaffected kernel packages.
- Review local user access on systems where affected kernels remain deployed.
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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-6270 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/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:H/PR:L/UI:N/S:U/C:H/I:H/A:H15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7HighVector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2023-6270CVE reference · vdb-entry, x_refsource_REDHAT
- RHBZ#2256786CVE reference · issue-tracking, x_refsource_REDHAT
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference · x_transferred
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlCVE reference · x_transferred
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.