What’s Vulnerable › Vulnerabilities

CVE-2026-72109: net: sparx5: unregister blocking notifier on init failure

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: net: sparx5: unregister blocking notifier on init failure sparx5_register_notifier_blocks() registers the switchdev blocking notifier before allocating the ordered workqueue. If the workqueue allocation fails, the error path unregisters the switchdev and netdevice notifiers, but leaves the blocking notifier registered. Add a separate error label for the workqueue allocation failure path and unregister the switchdev blocking notifier there.

Affected products

• Linux kernel: 5.14 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/17f113e7b622dc850992ade540181717de6a8561
• https://git.kernel.org/stable/c/483be61b4a9a6df3b7cb277e8f189e082dee4cb8
• https://git.kernel.org/stable/c/8a3c44a003176282ee4306b7c96e5a536c6f0707
• https://git.kernel.org/stable/c/cf419c869e0d03aad4b6f4ecf0a813851930dfe7
• https://git.kernel.org/stable/c/d6084c47389fd6978a5d66b0d58206a548c792a9
• https://git.kernel.org/stable/c/e5afc6d3fabdf1f605d63c4b34a3df6c359e81f3
• https://git.kernel.org/stable/c/fbc65b17508ed5464b7106e7fa5f15251ca1b603

Get alerted when CVE-2026-72109 or the next vulnerability affects your stack