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CVE Record

CVE-2026-23045: net/ena: fix missing lock when update devlink params

In the Linux kernel, the following vulnerability has been resolved: net/ena: fix missing lock when update devlink params Fix assert lock warning while calling devl_param_driverinit_value_set() in ena. WARNING: net/devlink/core.c:261 at devl_assert_locked+0x62/0x90, CPU#0: kworker/0:0/9 CPU: 0 UID: 0 PID: 9 Comm: kworker/0:0 Not tainted 6.19.0-rc2+ #1 PREEMPT(lazy) Hardware name: Amazon EC2 m8i-flex.4xlarge/, BIOS 1.0 10/16/2017 Workqueue: events work_for_cpu_fn RIP: 0010:devl_assert_locked+0x62/0x90 Call Trace: <TASK> devl_param_driverinit_value_set+0x15/0x1c0 ena_devlink_alloc+0x18c/0x220 [ena] ? __pfx_ena_devlink_alloc+0x10/0x10 [ena] ? trace_hardirqs_on+0x18/0x140 ? lockdep_hardirqs_on+0x8c/0x130 ? __raw_spin_unlock_irqrestore+0x5d/0x80 ? __raw_spin_unlock_irqrestore+0x46/0x80 ? devm_ioremap_wc+0x9a/0xd0 ena_probe+0x4d2/0x1b20 [ena] ? __lock_acquire+0x56a/0xbd0 ? __pfx_ena_probe+0x10/0x10 [ena] ? local_clock+0x15/0x30 ? __lock_release.isra.0+0x1c9/0x340 ? mark_held_locks+0x40/0x70 ? lockdep_hardirqs_on_prepare.part.0+0x92/0x170 ? trace_hardirqs_on+0x18/0x140 ? lockdep_hardirqs_on+0x8c/0x130 ? __raw_spin_unlock_irqrestore+0x5d/0x80 ? __raw_spin_unlock_irqrestore+0x46/0x80 ? __pfx_ena_probe+0x10/0x10 [ena] ...... </TASK>

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue affects the ENA network driver path for devlink parameter initialization. The reported symptom is a kernel lock assertion warning, not documented remote code execution or data exposure. Business urgency depends on whether affected Linux kernel versions and the ENA driver are in use.

Executive priority

Handle through normal kernel patch governance unless ENA-backed production fleets show warnings or instability. Escalate priority if vendors assign impact, affected hosts are critical, or operational telemetry shows driver-related failures.

Technical view

The ENA driver calls devl_param_driverinit_value_set() without holding the expected devlink lock, triggering devl_assert_locked() during ena_devlink_alloc() from ena_probe(). The CVE references stable kernel fixes. The bundle provides no CVSS score, CWE, exploitability assessment, or detailed impact beyond the lock warning trace.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions with the ENA driver path in use. The trace was observed on Amazon EC2 m8i-flex hardware, but the sources only identify Linux kernel ENA code, not a broader product list.

Exploitation context

No active exploitation is stated. The CVE is not marked KEV, and the source bundle does not describe public exploits, attacker prerequisites, or a practical exploitation path. Treat it as a kernel reliability and correctness issue unless vendor guidance adds impact detail.

Researcher notes

Evidence supports a missing devlink lock in ENA driver initialization and two stable fix references. The bundle does not establish confidentiality, integrity, availability impact, exploitability, affected distributions, or workaround details, so avoid overstating severity.

Mitigation direction

  • Update to a kernel release containing the referenced stable fixes.
  • Track distribution vendor advisories for backported ENA driver fixes.
  • Prioritize affected cloud hosts using ENA networking.
  • If no update is available, request vendor guidance before applying workarounds.

Validation and detection

  • Inventory Linux kernel versions across systems using ENA networking.
  • Check whether kernel packages include the referenced stable commits.
  • Review kernel logs for devlink or ena lock assertion warnings.
  • Confirm affected systems boot cleanly after kernel updates.
Prepared
Confidence
medium
Sources
4

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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CVE-2026-23045 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

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.

0CVSS vectors
3Timeline events
0ADP providers
3Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinux816b52624cf6a03ea541956b448025d844a8287d, 816b52624cf6a03ea541956b448025d844a8287dunaffected
LinuxLinux6.17, 0, 6.18.6, 6.19affected
Weakness

CWE details

No CWE listed

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