Bug 2467080 (CVE-2026-43146)

Summary: CVE-2026-43146 kernel: media: iris: Add buffer to list only after successful allocation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: unspecified Docs Contact:
Priority: unspecified    
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 iris media driver. When creating internal buffers, a buffer was added to a list before its Direct Memory Access (DMA) allocation was successfully completed. If the DMA allocation failed, a partially initialized buffer remained in the list. This could lead to an inconsistent system state and potential memory leaks.
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Description OSIDB Bzimport 2026-05-06 13:03:11 UTC 
In the Linux kernel, the following vulnerability has been resolved:

media: iris: Add buffer to list only after successful allocation

Move `list_add_tail()` to after `dma_alloc_attrs()` succeeds when creating
internal buffers. Previously, the buffer was enqueued in `buffers->list`
before the DMA allocation. If the allocation failed, the function returned
`-ENOMEM` while leaving a partially initialized buffer in the list, which
could lead to inconsistent state and potential leaks.

By adding the buffer to the list only after `dma_alloc_attrs()` succeeds,
we ensure the list contains only valid, fully initialized buffers.
Comment 1 Keith Grant 2026-05-06 18:40:26 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050626-CVE-2026-43146-c0ee@gregkh/T