Bug 2535255 (CVE-2026-89977) - CVE-2026-89977 kernel: accel/ethosu: check MMIO mapping errors in probe
Summary: CVE-2026-89977 kernel: accel/ethosu: check MMIO mapping errors in probe
Keywords:
Status: NEW
Alias: CVE-2026-89977
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-16 11:39 UTC by OSIDB Bzimport
Modified: 2026-10-21 13:26 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-16 11:39:25 UTC 
In the Linux kernel, the following vulnerability has been resolved:

accel/ethosu: check MMIO mapping errors in probe

devm_platform_ioremap_resource() returns an error pointer when the register
resource cannot be mapped. ethosu_probe() stores it and continues until
initialization dereferences it through MMIO accessors.

Return the mapping error before initializing the device.
Comment 1 Keith Grant 2026-09-16 19:57:48 UTC 
Upstream advisory:
https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-89977.mbox
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