Security readout for executives and security teams
Plain-English summary
This is a Linux kernel reliability flaw in Intel VT-d IOMMU device probing. On some platforms, the kernel can hit a warning and fail IOMMU probing because it assumes device source IDs are unique. Business impact is mainly local system stability and device initialization risk, not a proven remote compromise path.
Executive priority
Schedule remediation through the normal kernel patch cycle unless affected systems show IOMMU probe failures. Escalate priority for virtualization hosts, security-sensitive workloads, or platforms reporting related kernel warnings.
Technical view
The bug comes from tracking all probed IOMMU devices in an rbtree keyed by source ID. Duplicate source IDs can trigger WARN_ON in intel_iommu_probe_device and cause probe failure. The fix narrows rbtree tracking to devices with PCI ATS capabilities, matching the lookup paths that need it.
Likely exposure
Exposure is likely limited to Linux systems using Intel VT-d IOMMU code on affected kernel builds and hardware where source IDs are not unique. The source bundle does not identify affected distributions or complete version ranges.
Exploitation context
CVE data rates this as local attack vector with low confidentiality, integrity, and availability impact. The provided sources do not show CISA KEV listing or active exploitation evidence. Treat exploitation status as unconfirmed, not active.
Researcher notes
Evidence supports a kernel logic flaw rather than a broad remote exploitation issue. Version data in the bundle is sparse and commit-oriented, so distribution-specific exposure requires vendor advisory or source-tree validation.
Mitigation direction
- Update to a vendor kernel containing the referenced stable fixes.
- Check Linux distribution advisories for CVE-2024-35957 backports.
- Prioritize systems using Intel VT-d or PCI ATS-capable device paths.
- Avoid direct kernel cherry-picks unless supported by your platform vendor.
Validation and detection
- Inventory Linux kernel versions across affected server and endpoint fleets.
- Confirm whether referenced stable commits are present or vendor-backported.
- Review boot and kernel logs for intel_iommu_probe_device WARN_ON events.
- Check whether Intel VT-d/IOMMU is enabled on relevant hardware.
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
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CVE-2024-35957 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
- 5.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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:N/UI:N/S:U/C:L/I:L/A:L2.53.4CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.9MediumVector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
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/fba8ca3e6f608b92e54271fdbd3ce569361939fcCVE reference, Linux
- https://git.kernel.org/stable/c/89436f4f54125b1297aec1f466efd8acb4ec613dCVE reference, Linux
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.