Security readout for executives and security teams
Plain-English summary
A failure while registering an Ionic network device can leave a Linux kernel network-device notifier registered. The published fix adds the missing cleanup. Although rated high at CVSS 7.8, exploitation requires local, low-privileged access, and the supplied evidence does not establish practical exploitation or observed attacks.
Executive priority
Treat as a high-priority kernel maintenance item on hosts using the Ionic driver, especially multi-user systems where local untrusted access exists. Use normal expedited patching rather than emergency internet-edge response because the documented vector is local and no active exploitation is evidenced.
Technical view
CVE-2024-56715 is a CWE-401 cleanup flaw in the Linux Ionic network driver. If register_netdev() fails, the driver does not unregister its netdev notifier. The fix invokes ionic_lif_unregister(), which also unregisters the PTP hardware clock when previously registered. The supplied CVSS vector is local, low complexity, low privileges, no user interaction, with high confidentiality, integrity, and availability impacts.
Likely exposure
Exposure is limited to systems running an affected Linux kernel with the Ionic driver relevant to the device path and where network-device registration can fail. The bundle lists several affected versions, but its version-range semantics are incomplete; validate the exact distribution kernel and backported fixes with the vendor.
Exploitation context
The CVSS vector describes a local, low-privileged attack path. CISA KEV status is false, and no supplied source reports active exploitation, a public exploit, or demonstrated weaponization. The evidence establishes the faulty cleanup path but does not explain how the scored confidentiality, integrity, and availability impacts are achieved.
Researcher notes
The strongest evidence is the upstream fix description: a notifier remains registered after register_netdev() failure. The bundle contains multiple stable commits, likely reflecting branch-specific backports, but does not map each commit to a release. The affected-version data is ambiguous and includes an unexplained value of 0, so package-level vendor verification is essential.
Mitigation direction
- Install a vendor-supported kernel containing the applicable linked stable fix.
- Check distribution advisories for backported fixes before relying on kernel version numbers.
- Prioritize systems using the Ionic network driver or associated hardware.
- Follow vendor guidance if an updated kernel is not immediately available.
Validation and detection
- Inventory kernel versions and determine whether the Ionic driver is present or used.
- Confirm the installed kernel package incorporates the applicable stable fix commit.
- Review vendor security notices for precise affected and corrected package versions.
- After updating, verify the intended kernel is running and network devices initialize normally.
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-401: 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-2024-56715 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
2 official scoresWe 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:H1.85.9LinuxCVSS: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
7.8HighVector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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/87847938f5708b2509b279369c96572254bcf2baCVE reference, Linux
- https://git.kernel.org/stable/c/da93a12876f8b969df7316dc93aac7e725f88252CVE reference, Linux
- https://git.kernel.org/stable/c/da5736f516a664a9e1ff74902663c64c423045d2CVE reference, Linux
- https://git.kernel.org/stable/c/ee2e931b2b46de9af7f681258e8ec8e2cd81cfc6CVE reference, Linux
- https://git.kernel.org/stable/c/9590d32e090ea2751e131ae5273859ca22f5ac14CVE 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.