CVE-2026-98740
Received
Received - Intake
EDAC/altera ECC Memory Use-After-Free in Linux Kernel
Vulnerability report for CVE-2026-98740, 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:
EDAC/altera: Drop __init from ECC setup paths for re-probe safety
Sashiko reports:
"Does suppressing sysfs unbinding fully prevent the execution of freed __init
memory? If altr_sysmgr_regmap_lookup_by_phandle() returns -EPROBE_DEFER, the
probe is deferred until after __init memory is freed."
The a10 EDAC .setup callbacks (sdmmc, ethernet, nand, dma, usb, qspi) and
their helpers (altr_init_a10_ecc_device_type, altr_init_a10_ecc_block) were
marked __init. These run from the probe path, which may execute after init
memory is freed -- e.g. a probe deferred via -EPROBE_DEFER that only succeeds
once a late/module dependency appears, or a manual unbind/rebind. Calling
__init code then dereferences freed memory. Remove __init so these functions
remain valid at runtime.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Linux | Linux | 788586efd116d6d7d05985881eda503333e702b4 |
| Linux | Linux | 788586efd116d6d7d05985881eda503333e702b4 |
| Linux | Linux | 788586efd116d6d7d05985881eda503333e702b4 |
| Linux | Linux | 5.2 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
