Security readout for executives and security teams
Plain-English summary
A flaw in the Linux hns3 network driver can crash a system using HIP08 hardware when it receives IEEE 1588 time-synchronization traffic. The primary business impact is service interruption or host downtime; the supplied evidence does not indicate data theft or modification.
Executive priority
Treat as an expedited availability issue for confirmed HIP08 deployments, especially infrastructure carrying 1588/PTP traffic. Organizations without this hardware are unlikely to be exposed but should verify inventory before deprioritizing. No supplied source supports emergency response for active exploitation.
Technical view
HIP08 devices do not register a PTP device, leaving hdev->ptp NULL. Hardware can still mark a received packet’s timestamp as valid, causing hclge_ptp_get_rx_hwts to dereference hdev->ptp->flags and trigger a kernel NULL-pointer crash. CVSS 3.1 is 7.5, driven entirely by network-reachable availability impact.
Likely exposure
Exposure appears limited to Linux systems using affected hns3-supported HIP08 network hardware that can receive IEEE 1588/PTP traffic. The supplied affected-version data is ambiguous, so kernel versions should be verified against Linux stable commits or distribution advisories rather than interpreted as simple discrete releases.
Exploitation context
The source bundle marks this CVE as absent from CISA KEV and provides no evidence of active exploitation. The CVSS vector indicates unauthenticated network reachability, low complexity, and no user interaction, but practical exposure depends on specific HIP08 hardware and receipt of 1588 traffic.
Researcher notes
The failure is a NULL-pointer dereference in the receive timestamp path, not a demonstrated confidentiality or integrity compromise. Six Linux stable commit references are supplied. The affected-version representation is not sufficiently clear for exact branch boundaries, and no CWE is listed; use branch-specific commit or distributor mappings.
Mitigation direction
- Upgrade to a vendor-supported kernel containing the applicable Linux stable fix.
- Prioritize HIP08 systems whose hns3 interfaces can receive IEEE 1588/PTP traffic.
- Consult the Linux distributor or hardware vendor for branch-specific remediation guidance.
- Apply normal change controls because kernel remediation may require installation and reboot.
Validation and detection
- Inventory HIP08 network hardware and systems using the hns3 or hclge drivers.
- Record running kernel versions and compare them with distributor advisories or linked stable fixes.
- Confirm the remediated kernel is active after reboot.
- Review kernel logs for hclge_ptp_get_rx_hwts NULL-pointer crashes without deliberately triggering the condition.
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
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CVE-2024-26881 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
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6LinuxVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/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/23ec1cec24293f9799c725941677d4e167997265CVE reference, Linux
- https://git.kernel.org/stable/c/b3cf70472a600bcb2efe24906bc9bc6014d4c6f6CVE reference, Linux
- https://git.kernel.org/stable/c/f0b5225a7dfc1bf53c98215db8c2f0b4efd3f108CVE reference, Linux
- https://git.kernel.org/stable/c/b2bb19114c079dcfec1ea46e761f510e30505e70CVE reference, Linux
- https://git.kernel.org/stable/c/11b998360d96f6c76f04a95f54b49f24d3c858e4CVE reference, Linux
- https://git.kernel.org/stable/c/0fbcf2366ba9888cf02eda23e35fde7f7fcc07c3CVE 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.