Bug 2435656 (CVE-2026-23026)

Summary: CVE-2026-23026 kernel: dmaengine: qcom: gpi: Fix memory leak in gpi_peripheral_config()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2026-01-31 12:02:06 UTC 
In the Linux kernel, the following vulnerability has been resolved:

dmaengine: qcom: gpi: Fix memory leak in gpi_peripheral_config()

Fix a memory leak in gpi_peripheral_config() where the original memory
pointed to by gchan->config could be lost if krealloc() fails.

The issue occurs when:
1. gchan->config points to previously allocated memory
2. krealloc() fails and returns NULL
3. The function directly assigns NULL to gchan->config, losing the
   reference to the original memory
4. The original memory becomes unreachable and cannot be freed

Fix this by using a temporary variable to hold the krealloc() result
and only updating gchan->config when the allocation succeeds.

Found via static analysis and code review.
Comment 1 Alexander B 2026-02-02 10:05:09 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026013119-CVE-2026-23026-5ca7@gregkh/T