Security readout for executives and security teams
Plain-English summary
This is a Linux kernel driver flaw that can crash affected systems by mishandling an error response. The impact is availability only: the provided CVSS data shows no confidentiality or integrity impact. It requires local access with low privileges, so prioritize exposed shared servers and systems using the octeontx2-pf driver.
Executive priority
Treat as a moderate availability risk. It is not remote-code-execution evidence, but local users or workloads could trigger a kernel crash on affected systems. Patch through normal kernel maintenance, with higher urgency for multi-user or service-critical Linux hosts.
Technical view
CVE-2024-56727 fixes missing error-pointer handling after otx2_mbox_get_rsp() in Linux kernel octeontx2-pf code, specifically otx2_flows.c. The listed weakness is CWE-476. CVSS 3.1 is 5.5, local attack vector, low complexity, low privileges, no user interaction, and high availability impact.
Likely exposure
Exposure is most likely on Linux systems within the listed affected kernel ranges where the octeontx2-pf driver is present or enabled. Distribution kernels may differ, so validate using vendor advisories and package versions rather than upstream version numbers alone.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. The CVSS vector indicates local, low-privilege abuse could cause availability impact. No public exploit details are provided in the supplied sources.
Researcher notes
Evidence supports a missing error-pointer check in octeontx2-pf flow handling. The source bundle gives stable commit references and Debian LTS notice, but does not include exploit evidence, detailed trigger conditions, or full vendor-specific fixed package mapping.
Mitigation direction
- Update affected Linux kernels using vendor-supported security packages.
- Apply relevant upstream stable fixes where source-based kernel maintenance is used.
- Check Debian LTS guidance if operating Debian LTS systems.
- Prioritize systems where octeontx2-pf is present or loaded.
- Follow distribution advisories for exact fixed package versions.
Validation and detection
- Inventory kernel versions across Linux fleets.
- Check whether the octeontx2-pf driver is present or loaded.
- Compare installed kernels with distribution security advisories.
- Confirm patched builds include the referenced stable kernel commits.
- Review crash logs for driver-related availability symptoms.
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-476: 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-2024-56727 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
- 5.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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:N/I:N/A:H1.83.6CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
5.5MediumVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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/e3c4e78d636e6dbd8ed72e41b311de2bb7e0b699CVE reference, Linux
- https://git.kernel.org/stable/c/8c9f8b35dc3d4ad8053a72bc0c5a7843591f6b75CVE reference, Linux
- https://git.kernel.org/stable/c/c4eae7bac880edd88aaed6a8ec2997fa85e259c7CVE reference, Linux
- https://git.kernel.org/stable/c/a479b3d7586e6f77f8337bbcac980eaf2d0a4029CVE reference, Linux
- https://git.kernel.org/stable/c/e5e60f17d2462ef5c13db4d1a54eef5778fd2295CVE reference, Linux
- https://git.kernel.org/stable/c/bd3110bc102ab6292656b8118be819faa0de8dd0CVE reference, Linux
- https://lists.debian.org/debian-lts-announce/2025/03/msg00001.htmlCVE reference, CVE
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.
NULL Pointer Dereference
NULL Pointer Dereference represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.