Bug 2468169 (CVE-2026-43462)

Summary: CVE-2026-43462 kernel: net: spacemit: Fix error handling in emac_tx_mem_map()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
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 `spacemit` network driver. Specifically, an error in the `emac_tx_mem_map()` function could result in the leakage of Direct Memory Access (DMA) mappings. This resource management issue may lead to a denial of service, impacting system availability.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-05-08 15:02:47 UTC
In the Linux kernel, the following vulnerability has been resolved:

net: spacemit: Fix error handling in emac_tx_mem_map()

The DMA mappings were leaked on mapping error. Free them with the
existing emac_free_tx_buf() function.