Security readout for executives and security teams
Plain-English summary
CVE-2023-2860 is a Linux kernel information disclosure bug in SR-IPv6 handling. A user who already has high local privileges could cause the kernel to read past an allocated buffer and potentially expose sensitive memory. This is not described as remote code execution or active exploitation in the provided sources.
Executive priority
Treat this as a moderate-priority kernel hygiene issue, not an emergency remote compromise event. Prioritize confirmation of affected kernels, especially non-Red Hat environments, and fold remediation into normal privileged-host patch cycles unless your vendor reports higher impact.
Technical view
The flaw is CWE-125 out-of-bounds read in Linux SR-IPv6 seg6 attribute processing when setting HMAC data. Improper validation of user-supplied data can read beyond a buffer. CVSS is 4.4 with local access and high privileges required. The bundle names kernel 6.0-rc5; Red Hat and Fedora kernel packages are listed unaffected.
Likely exposure
Exposure appears limited to affected Linux kernel builds using the vulnerable SR-IPv6 implementation. The bundle specifically lists kernel 6.0-rc5 and marks listed Red Hat Enterprise Linux and Fedora kernel packages as unaffected. Other distributions are not assessed in the provided evidence.
Exploitation context
The provided bundle does not cite CISA KEV listing or active exploitation. Abuse requires local access with high privileges, making this more relevant to post-compromise information disclosure than initial intrusion. No exploit steps or weaponization details are needed to assess exposure.
Researcher notes
Evidence is narrow: the bundle describes the vulnerability class, SR-IPv6 seg6 area, CVSS vector, and affected kernel 6.0-rc5. It does not provide a patch identifier, fixed version, exploit status, or broad upstream distribution matrix. Avoid extrapolating affected products beyond cited vendor data.
Mitigation direction
- Inventory Linux systems and kernel versions, especially any 6.0-rc5 builds.
- Check vendor advisories for your distribution before assuming affected status.
- Apply vendor-provided kernel updates if your distribution marks the issue affected.
- Limit local privileged access and audit accounts with kernel-facing administrative rights.
- Track Red Hat and upstream CVE records for any revised affected scope.
Validation and detection
- Compare running kernel versions against vendor CVE advisories.
- Confirm whether SR-IPv6 support is present and used on relevant systems.
- Check package status for Red Hat and Fedora systems; provided data lists them unaffected.
- Review vulnerability scanner findings for unsupported assumptions about distribution impact.
- Document any systems awaiting vendor confirmation or kernel updates.
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-125: 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-2023-2860 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
- Medium
- CVSS
- 4.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
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:H/UI:N/S:U/C:H/I:N/A:N0.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
4.4MediumVector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2023-2860CVE reference · vdb-entry, x_refsource_REDHAT
- RHBZ#2218122CVE reference · issue-tracking, x_refsource_REDHAT
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-18511CVE 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.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.