Bug 2493702 (CVE-2026-53299)

Summary: CVE-2026-53299 kernel: net: airoha: Move ndesc initialization at end of airoha_qdma_init_tx()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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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, specifically within the airoha network driver. This vulnerability arises from an issue where a variable (ndesc) is initialized too early in the airoha_qdma_init_tx_queue routine. If a queue entry list allocation fails, this premature initialization can lead to a NULL pointer dereference, which could allow a local attacker to trigger a system crash. This results in a Denial of Service (DoS), making the system unavailable.
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Description OSIDB Bzimport 2026-06-26 21:01:39 UTC 
In the Linux kernel, the following vulnerability has been resolved:

net: airoha: Move ndesc initialization at end of airoha_qdma_init_tx()

If queue entry list allocation fails in airoha_qdma_init_tx_queue routine,
airoha_qdma_cleanup_tx_queue() will trigger a NULL pointer dereference
accessing the queue entry array. The issue is due to the early ndesc
initialization in airoha_qdma_init_tx_queue(). Fix the issue moving ndesc
initialization at end of airoha_qdma_init_tx routine.
Comment 1 Mauro Matteo Cascella 2026-06-29 10:56:13 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026062618-CVE-2026-53299-3d38@gregkh/T