CVE-2026-98492
Received
Received - Intake
Memory Leak in Linux Kernel macb Driver
Vulnerability report for CVE-2026-98492, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-18
Last updated on: 2026-10-18
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
net: macb: fix dma_alloc_coherent() leak on macb_alloc() error paths
Fix 3 leaks in macb_alloc() error paths:
- Tx buffer allocated but crossing a 4G boundary: Tx leaked.
- Rx buffer allocation fails: Tx leaked.
- Rx buffer allocated but crossing a 4G boundary: Tx & Rx leaked.
This is because our error handling calls macb_free(bp) which in turn
frees the buffers stored in bp->queues[0], but nothing has been stored
in there. Fix by storing allocated buffers into bp->queues[0] ASAP.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 78d901897b3cae06b38f54e48a2378cf9da21175 |
| Linux | Linux | 78d901897b3cae06b38f54e48a2378cf9da21175 |
| Linux | Linux | 78d901897b3cae06b38f54e48a2378cf9da21175 |
| Linux | Linux | 982a4d9a2e12b693f684eff943043a607628d871 |
| Linux | Linux | 6.17.3 |
| Linux | Linux | 6.18 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
