In the Linux kernel, the following vulnerability has been resolved:
tracing: Delay module ref count for "enable_event" trigger
Triggers are now delayed from freeing, but can still be triggered until after the RCU grace period has ended. The freeing of the enable_event data is put into the private_data_free() callback, but the put of the module refcount is done immediately.
It is possible that if a module is removed that has an event that would enable (or disable) it is still active, it can read the data of the module after it is removed causing a use-after-free bug.
Move the trace_event_put_ref() that releases the module into the delayed callback so that the module can not be removed until any reference to its events are finished.
CVSS Details
- CVSS 3.1 Base Score: 7.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ubuntu | — | Upgrade linux-image-7.0.0-1015-oemUpgrade linux-image-7.0.0-1017-azureUpgrade linux-image-7.0.0-38-realtime-64kUpgrade linux-image-generic-64k-7.0Upgrade linux-image-oem-26.04Upgrade linux-image-oracle-7.0Upgrade linux-image-virtual-hwe-26.04Upgrade linux-image-7.0.0-1013-oracleUpgrade linux-image-aws-64k-7.0Upgrade linux-image-7.0.0-38-realtimeUpgrade linux-image-realtime-7.0Upgrade linux-image-azure-fdeUpgrade linux-image-7.0.0-1016-azure-fdeUpgrade linux-image-azureUpgrade linux-image-generic-64kUpgrade linux-image-virtualUpgrade linux-image-gcp-7.0Upgrade linux-image-azure-lts-26.04Upgrade linux-image-7.0.0-1015-ibmUpgrade linux-image-azure-fde-7.0Upgrade linux-image-realtime-hwe-26.04Upgrade linux-image-aws-7.0Upgrade linux-image-ibmUpgrade linux-image-generic-64k-hwe-26.04Upgrade linux-image-7.0.0-1014-gcp-64kUpgrade linux-image-gke-64kUpgrade linux-image-oracle-64k-7.0Upgrade linux-image-genericUpgrade linux-image-7.0.0-1013-oracle-64kUpgrade linux-image-virtual-hwe-24.04Upgrade linux-image-7.0.0-1008-gkeUpgrade linux-image-ibm-7.0Upgrade linux-image-realtime-64kUpgrade linux-image-7.0.0-1014-awsUpgrade linux-image-7.0.0-1014-gcpUpgrade linux-image-aws-64kUpgrade linux-image-generic-hwe-24.04Upgrade linux-image-generic-7.0Upgrade linux-image-7.0.0-1014-aws-64kUpgrade linux-image-gcp-64k-7.0Upgrade linux-image-gke-64k-hwe-26.04Upgrade linux-image-gcp-64kUpgrade linux-image-oracle-64kUpgrade linux-image-oem-7.0Upgrade linux-image-gke-64k-7.0Upgrade linux-image-oracleUpgrade linux-image-generic-hwe-26.04Upgrade linux-image-gkeUpgrade linux-image-virtual-7.0Upgrade linux-image-gcpUpgrade linux-image-7.0.0-38-genericUpgrade linux-image-realtime-64k-hwe-26.04Upgrade linux-image-awsUpgrade linux-image-7.0.0-38-generic-64kUpgrade linux-image-oem-26.04aUpgrade linux-image-gke-7.0Upgrade linux-image-generic-64k-hwe-24.04Upgrade linux-image-azure-fde-lts-26.04Upgrade linux-image-7.0.0-1008-gke-64kUpgrade linux-image-realtime-64k-7.0Upgrade linux-image-gke-hwe-26.04Upgrade linux-image-azure-7.0Upgrade linux-image-realtime | Oct 7, 2026 | Oct 6, 2026 |
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