Bug 2395655 (CVE-2023-53284)

Summary: CVE-2023-53284 kernel: drm/msm/dpu: check for null return of devm_kzalloc() in dpu_writeback_init()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
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OS: Linux   
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Description OSIDB Bzimport 2025-09-16 09:01:29 UTC 
In the Linux kernel, the following vulnerability has been resolved:

drm/msm/dpu: check for null return of devm_kzalloc() in dpu_writeback_init()

Because of the possilble failure of devm_kzalloc(), dpu_wb_conn might
be NULL and will cause null pointer dereference later.

Therefore, it might be better to check it and directly return -ENOMEM.

Patchwork: https://patchwork.freedesktop.org/patch/512277/
[DB: fixed typo in commit message]
Comment 1 Keith Grant 2025-09-16 13:15:00 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091625-CVE-2023-53284-e65e@gregkh/T