CVE-2026-53299

Kernel crash via premature descriptor-count initialization

Published Jun 26, 2026 · Updated Jun 26, 2026

NULL pointer dereference in the Airoha QDMA driver in Linux Kernel 6.19 allows local users to crash the kernel during transmit-queue initialization. airoha_qdma_init_tx_queue() sets ndesc before allocating the queue-entry array, so cleanup treats an uninitialized queue as populated and dereferences the NULL array. Exploitation requires high local privileges, the Airoha driver, and a queue-entry allocation failure; the reported consequence is availability loss only.

CVSS severity6.7
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Airoha QDMA driver in Linux Kernel 6.19 allows local users to crash the kernel during transmit-queue initialization. airoha_qdma_init_tx_queue() sets ndesc before allocating the queue-entry array, so cleanup treats an uninitialized queue as populated and dereferences the NULL array. Exploitation requires high local privileges, the Airoha driver, and a queue-entry allocation failure; the reported consequence is availability loss only.

The record

CVE
CVE-2026-53299
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3f47e67dff1f7266e112c50313d63824f6f17102 <ece31f9dae0c3cd3277e66667e7b8ab2577cf34a
  2. Affected versionversion=3f47e67dff1f7266e112c50313d63824f6f17102 <f329924bb49458c65297f1361f545816a5b90998
  3. Affected versionversion=6.19
  4. Affected versionversion=ad02cb61c52cae5afa3e2de6adbb49ad884c26e9 <90619fdedfb9cc8a80f217d882ee7a84d3703e72

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=3f47e67dff1f7266e112c50313d63824f6f17102 <ece31f9dae0c3cd3277e66667e7b8ab2577cf34a; version=3f47e67dff1f7266e112c50313d63824f6f17102 <f329924bb49458c65297f1361f545816a5b90998; version=6.19; version=ad02cb61c52cae5afa3e2de6adbb49ad884c26e9 <90619fdedfb9cc8a80f217d882ee7a84d3703e72

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.7SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
4.4SUSECVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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