Bug 2347984 (CVE-2022-49254)

Summary: CVE-2022-49254 kernel: media: ti-vpe: cal: Fix a NULL pointer dereference in cal_ctx_v4l2_init_formats()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Priority: medium    
Version: unspecifiedCC: dfreiber, drow, jburrell, vkumar
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Hardware: All   
OS: Linux   
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Description OSIDB Bzimport 2025-02-26 03:13:35 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: ti-vpe: cal: Fix a NULL pointer dereference in cal_ctx_v4l2_init_formats()

In cal_ctx_v4l2_init_formats(), devm_kzalloc() is assigned to
ctx->active_fmt and there is a dereference of it after that, which could
lead to NULL pointer dereference on failure of devm_kzalloc().

Fix this bug by adding a NULL check of ctx->active_fmt.

This bug was found by a static analyzer.

Builds with 'make allyesconfig' show no new warnings, and our static
analyzer no longer warns about this code.
Comment 1 Avinash Hanwate 2025-02-26 21:07:39 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025022627-CVE-2022-49254-ea38@gregkh/T