CVE-2026-98208
Received
Received - Intake
Memory Leak in Linux Kernel SDIO UART Driver
Vulnerability report for CVE-2026-98208, 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:
mmc: sdio_uart: fix xmit_fifo leak when the port table is full
sdio_uart_add_port() allocates the transmit fifo before claiming a
slot in sdio_uart_table[]. When all UART_NR slots are taken, it
returns -EBUSY with the fifo still allocated, but the probe error
path only kfree()s the port, leaking the transmit fifo.
Free the fifo in the failure path of sdio_uart_add_port() itself so
the function retains nothing on error.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 8b197a5ce7a7218bb9fc721647ba0d5734f27348 |
| Linux | Linux | 8b197a5ce7a7218bb9fc721647ba0d5734f27348 |
| Linux | Linux | 8b197a5ce7a7218bb9fc721647ba0d5734f27348 |
| Linux | Linux | 8b197a5ce7a7218bb9fc721647ba0d5734f27348 |
| Linux | Linux | 8b197a5ce7a7218bb9fc721647ba0d5734f27348 |
| Linux | Linux | 8b197a5ce7a7218bb9fc721647ba0d5734f27348 |
| Linux | Linux | 8b197a5ce7a7218bb9fc721647ba0d5734f27348 |
| Linux | Linux | 8b197a5ce7a7218bb9fc721647ba0d5734f27348 |
| Linux | Linux | 2.6.34 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
