Bug 2525396 (CVE-2026-80597)

Summary: CVE-2026-80597 kernel: mtd: maps: vmu-flash: fix NULL pointer dereference in initialization
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's `mtd: maps: vmu-flash` component. During the initialization of the Memory Technology Device (MTD), a NULL pointer dereference can occur if the `mtd_info` structure, which contains a device structure, is not properly linked to its parent. This issue can lead to the failure of the MTD initialization, potentially causing system instability or a denial of service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-08-28 07:42:52 UTC
In the Linux kernel, the following vulnerability has been resolved:

mtd: maps: vmu-flash: fix NULL pointer dereference in initialization

The mtd_info contains a struct device, which must be linked to its
parent. Without this, the initialization of the MTD fails with a NULL
pointer dereference.