CVE-2026-98386
Received
Received - Intake
Memory Corruption in Linux Kernel QLA2XXX Driver
Vulnerability report for CVE-2026-98386, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-14
Last updated on: 2026-10-14
Assigner: kernel.org
Description
Description
In the Linux kernel, the following vulnerability has been resolved:
scsi: qla2xxx: Use memset_io() to clear QLAFX00 request ring slot
For QLAFX00 the request ring is ioremapped device I/O memory
(ha->iobase + req_que_off), not DMA-coherent RAM, which is why the rest
of the FX00 path accesses it through memcpy_toio() and the wrt_reg_*
helpers. __qla2x00_alloc_iocbs() however zeroed the producer slot with a
plain memset(). On architectures such as ARM64 a regular memset() may
emit unaligned or block-zeroing instructions (e.g. DC ZVA) that are
invalid on Device memory, leading to a synchronous external abort.
Use memset_io() to clear the slot for QLAFX00, matching the I/O
accessors used elsewhere on this ring. Other adapters keep the plain
memset() on their DMA-coherent rings. The zero-fill is retained for FX00
because its IOCB builders (e.g. qlafx00_fxdisc_iocb()) copy only part of
the entry and rely on the unused tail being pre-zeroed.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 8ae6d9c7eb1004bc134813287010d57a863ba13b |
| Linux | Linux | 8ae6d9c7eb1004bc134813287010d57a863ba13b |
| Linux | Linux | 8ae6d9c7eb1004bc134813287010d57a863ba13b |
| Linux | Linux | 8ae6d9c7eb1004bc134813287010d57a863ba13b |
| Linux | Linux | 3.10 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
