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CVE-2026-53299 Linux CVE debrief

CVE-2026-53299 is a vulnerability in the Linux kernel that has been resolved. The vulnerability is related to the airoha_qdma_init_tx_queue routine, where a NULL pointer dereference occurs when queue entry list allocation fails. The issue arises due to early ndesc initialization in airoha_qdma_init_tx_queue(). The fix involves moving ndesc initialization to the end of airoha_qdma_init_tx routine. This vulnerability has been made public on 2026-06-26T20:17:23.110Z and last modified on 2026-06-30T14:44:27.313Z.

Vendor
Linux
Product
Unknown
CVSS
MEDIUM 5.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-26
Original CVE updated
2026-07-08
Advisory published
2026-06-26
Advisory updated
2026-07-08

Who should care

Linux kernel users and maintainers should be aware of this vulnerability. Those using the airoha network driver may need to take action to protect their systems. Linux distribution maintainers should review their packages for affected versions.

Technical summary

The vulnerability occurs in the airoha_qdma_init_tx_queue routine of the Linux kernel's airoha network driver. When queue entry list allocation fails, airoha_qdma_cleanup_tx_queue() triggers a NULL pointer dereference accessing the queue entry array. This happens because ndesc initialization occurs too early in airoha_qdma_init_tx_queue(). The fix moves ndesc initialization to the end of airoha_qdma_init_tx routine, preventing the NULL pointer dereference.

Defensive priority

Medium priority for Linux kernel maintainers and users. Apply patches or update to fixed versions as soon as available.

Recommended defensive actions

  • Review Linux kernel versions for patches related to CVE-2026-53299.
  • Apply patches or update to fixed versions as soon as available.
  • Monitor Linux distribution advisories for updated packages.
  • Perform inventory checks for systems using the airoha network driver.
  • Consider compensating controls for systems that cannot be updated immediately.

Evidence notes

The CVE record and NVD detail pages provide official information about CVE-2026-53299. Linux kernel source code references are available, showing the fix for the vulnerability. However, details about affected versions or scope are limited in the provided source corpus.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-53299 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-53299

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-53299 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-53299

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/90619fdedfb9cc8a80f217d882ee7a84d3703e72

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/ece31f9dae0c3cd3277e66667e7b8ab2577cf34a

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

  • Source reference

    Unverified legacy reference

    URL: https://git.kernel.org/stable/c/f329924bb49458c65297f1361f545816a5b90998

    416baaa9-dc9f-4396-8d5f-8c081fb06d67

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.