Bug 2482155 (CVE-2026-45958)

Summary: CVE-2026-45958 kernel: drm/exynos: vidi: fix to avoid directly dereferencing user pointer
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Linux kernel's drm/exynos: vidi driver. A local user could exploit this vulnerability by directly dereferencing a user pointer in the vidi_connection_ioctl() function. This allows for arbitrary kernel memory access from user space, potentially leading to privilege escalation or information disclosure.
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Description OSIDB Bzimport 2026-05-27 15:13:54 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/exynos: vidi: fix to avoid directly dereferencing user pointer

In vidi_connection_ioctl(), vidi->edid(user pointer) is directly
dereferenced in the kernel.

This allows arbitrary kernel memory access from the user space, so instead
of directly accessing the user pointer in the kernel, we should modify it
to copy edid to kernel memory using copy_from_user() and use it.
Comment 1 Keith Grant 2026-05-27 23:26:47 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026052733-CVE-2026-45958-f9a1@gregkh/T