CVE-2023-53284
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-09-16

Last updated on: 2025-12-02

Assigner: kernel.org

Description
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]
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Meta Information
Published
2025-09-16
Last Modified
2025-12-02
Generated
2026-06-16
AI Q&A
2025-09-16
EPSS Evaluated
2026-06-15
NVD
CVE-2023-53284
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
linux linux_kernel From 5.19 (inc) to 6.1.16 (exc)
linux linux_kernel From 6.2 (inc) to 6.2.3 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-476 The product dereferences a pointer that it expects to be valid but is NULL.
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Executive Summary

This vulnerability occurs in the Linux kernel's drm/msm/dpu component where a function called devm_kzalloc() may fail and return NULL. If this failure is not checked, it can lead to a null pointer dereference later in the code, potentially causing a crash or unexpected behavior. The fix involves checking the return value of devm_kzalloc() and returning an error (-ENOMEM) if it fails.

Impact Analysis

If exploited, this vulnerability could cause the affected system to crash or behave unpredictably due to a null pointer dereference in the Linux kernel's display processing unit code. This could lead to denial of service or system instability.

Mitigation Strategies

To mitigate this vulnerability, update the Linux kernel to a version that includes the patch fixing the null pointer dereference in drm/msm/dpu by checking the return value of devm_kzalloc() in dpu_writeback_init().

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