NULL pointer dereference in Linux kernel - CVE-2026-53298
Published: June 29, 2026
Vulnerability identifier: #VU135737
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-53298
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a NULL pointer dereference in airoha_qdma_cleanup() when cleaning up a partially initialized RX queue after allocation failures in airoha_qdma_init_rx_queue(). A local user can trigger queue initialization failure to cause a denial of service.
The issue occurs because RX queue NAPI cleanup may be performed even though netif_napi_add() was never executed for the affected queue.
How to mitigate CVE-2026-53298
Install security update from vendor's repository.