Description
In the Linux kernel, the following vulnerability has been resolved:

ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_switch_netns()

It's pointless to call WARN_ON() in case of an allocation failure in
dev_change_net_namespace() and device_rename(), since it only leads to
useless splats caused by deliberate fault injections, so avoid it.

Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Published: 2026-08-28
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The patch removes a redundant WARN_ON call that was executed when a network‑namespace switch failed due to a memory allocation error in the IEEE 802.15.4 networking driver. The warning was harmless; its removal simply eliminates unnecessary log output. The change does not expose any confidentiality, integrity, or availability weakness and there is no known method to exploit it.

Affected Systems

Linux kernel implementations that include the cfg802154 driver are affected, specifically any kernel build before the patch was applied. All distributions shipping a kernel with this driver may experience the redundant warning until the update is incorporated.

Risk and Exploitability

The vulnerability does not present an exploitable risk; it is not listed in the CISA Known Exploited Vulnerabilities catalog and no publicly available EPSS score is provided. Because it only caused superfluous diagnostic output, the likelihood of malicious exploitation is negligible.

Generated by OpenCVE AI on August 28, 2026 at 11:35 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the Linux kernel to a version that includes the patch that removes the redundant WARN_ON call.
  • If an upgrade cannot be performed immediately, monitor system logs for WARN_ON messages related to cfg802154 and treat them as benign, ensuring that no false alarm triggers remediation actions.
  • Coordinate with distribution maintainers to ensure the patch is applied promptly.

Generated by OpenCVE AI on August 28, 2026 at 11:35 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Fri, 28 Aug 2026 07:30:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_switch_netns() It's pointless to call WARN_ON() in case of an allocation failure in dev_change_net_namespace() and device_rename(), since it only leads to useless splats caused by deliberate fault injections, so avoid it. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.
Title ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_switch_netns()
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-08-28T06:48:36.911Z

Reserved: 2026-08-26T14:34:25.774Z

Link: CVE-2026-80616

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-28T08:16:45.620

Modified: 2026-08-28T08:16:45.620

Link: CVE-2026-80616

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T10:00:06Z

Weaknesses

No weakness.