CVE-2026-98235
Received
Received - Intake
Linux Kernel Action API Reference Leak
Vulnerability report for CVE-2026-98235, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-06
Last updated on: 2026-10-06
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
net/sched: act_api: release tail references on DELACTION failure
A batched RTM_DELACTION request takes a temporary reference on each
action before attempting any deletion. tcf_action_delete() clears
each processed slot and drops its temporary reference before attempting
the deletion. If deletion fails, tca_action_gd() calls
tcf_action_put_many() to release the remaining references, but its
tcf_act_for_each_action() iterator stops at the first NULL slot.
When a batch stops at an action bound to a filter, this leaks a
reference on each subsequent action. A later delete of an unbound
action can then return success without removing it from the IDR.
Walk the full array in tcf_action_put_many() and skip NULL slots to
release the references held on the unprocessed actions.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | a0e947c9ccffe47d45aca793d9e7fe4f4494e381 |
| Linux | Linux | a0e947c9ccffe47d45aca793d9e7fe4f4494e381 |
| Linux | Linux | a0e947c9ccffe47d45aca793d9e7fe4f4494e381 |
| Linux | Linux | a0e947c9ccffe47d45aca793d9e7fe4f4494e381 |
| Linux | Linux | 6.8 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
