CVE-2026-98217
Received
Received - Intake
Use-After-Free in Linux Kernel IB/mlx4 Driver
Vulnerability report for CVE-2026-98217, 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:
IB/mlx4: Fix use-after-free on pkey sysfs registration failure
register_pkey_tree() ignores errors from register_one_pkey_tree() and
continues registering the remaining slaves. The per-slave error path has
already released the pkey parent kobjects, but their pointers remain
stored in the device. A later device cleanup therefore passes the stale
pointers to kobject_put(), causing a use-after-free.
Clear the parent pointers after releasing a failed slave tree and skip
unregistered trees during device cleanup. This preserves the existing
best-effort registration behavior while preventing a second cleanup of
the failed tree.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | c1e7e466120b80ce49e91af0c9da1ce6dee4844a |
| Linux | Linux | c1e7e466120b80ce49e91af0c9da1ce6dee4844a |
| Linux | Linux | c1e7e466120b80ce49e91af0c9da1ce6dee4844a |
| Linux | Linux | c1e7e466120b80ce49e91af0c9da1ce6dee4844a |
| Linux | Linux | c1e7e466120b80ce49e91af0c9da1ce6dee4844a |
| Linux | Linux | c1e7e466120b80ce49e91af0c9da1ce6dee4844a |
| Linux | Linux | c1e7e466120b80ce49e91af0c9da1ce6dee4844a |
| Linux | Linux | c1e7e466120b80ce49e91af0c9da1ce6dee4844a |
| Linux | Linux | 3.7 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
