Security readout for executives and security teams
Plain-English summary
This is a high-severity Linux kernel issue in the Mellanox mlx5 RDMA driver path. A local authenticated user could potentially trigger unsafe kernel memory behavior when RDMA/IPoIB traffic uses the affected Ethernet segment handling. Systems without mlx5 RDMA/IPoIB exposure are less likely to be affected.
Executive priority
Treat as high priority for RDMA-capable Linux infrastructure, especially virtualization, HPC, storage, and industrial systems. It is not documented as remotely exploitable in the provided evidence, but kernel-level impact and low local privilege requirements justify prompt patch planning.
Technical view
The CVE describes a resolved Linux kernel flaw in RDMA/mlx5 where fortified memcpy detected a field-spanning write to eseg->inline_hdr.start in mlx5_ib_post_send. Metadata rates it CVSS 7.8 with local attack vector, low complexity, low privileges, no user interaction, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is most likely on Linux systems using Mellanox mlx5 InfiniBand/RDMA components, including IP over InfiniBand. The source metadata lists affected Linux kernel ranges and stable kernel fixes. Distribution backports may change version interpretation, so asset validation should use vendor kernel advisories.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The CVSS vector requires local access and low privileges, so this is mainly a local privilege or kernel-impact concern on eligible RDMA-enabled hosts.
Researcher notes
Evidence is strongest for affected component, call path, CVSS, and upstream stable fixes. The bundle does not provide exploit details, active exploitation evidence, or universal distro package names. Validate against specific kernel trees because Linux vendors commonly backport fixes without changing upstream version numbers.
Mitigation direction
- Update affected Linux kernels to vendor-supported fixed builds.
- Prioritize RDMA/mlx5 and IPoIB-enabled servers first.
- Check Debian LTS and device-vendor advisories for backported fixes.
- Review Siemens guidance where affected products use vulnerable Linux kernels.
- If updates are delayed, review vendor guidance for disabling unused RDMA/IPoIB exposure.
Validation and detection
- Inventory Linux hosts with mlx5_core, mlx5_ib, ib_ipoib, or RDMA modules loaded.
- Map running kernel builds to distro advisories, not only upstream versions.
- Confirm whether Mellanox/NVIDIA ConnectX hardware or virtual RDMA paths are present.
- Check package changelogs for the referenced upstream stable commits.
- Monitor kernel logs for mlx5_ib fortify or memcpy warnings.
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 lookupCVE-2024-26907 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.
SSVC decision data
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:H1.85.9CISA-ADPVulnerability 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
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://git.kernel.org/stable/c/d27c48dc309da72c3b46351a1205d89687272baaCVE reference, Linux
- https://git.kernel.org/stable/c/60ba938a8bc8c90e724c75f98e932f9fb7ae1b9dCVE reference, Linux
- https://git.kernel.org/stable/c/cad82f1671e41094acd3b9a60cd27d67a3c64a21CVE reference, Linux
- https://git.kernel.org/stable/c/9a624a5f95733bac4648ecadb320ca83aa9c08fdCVE reference, Linux
- https://git.kernel.org/stable/c/185fa07000e0a81d54cf8c05414cebff14469a5cCVE reference, Linux
- https://git.kernel.org/stable/c/4d5e86a56615cc387d21c629f9af8fb0e958d350CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlCVE reference, CVE · x_transferred
- https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlCVE reference, siemens-SADP
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.