CVE-2026-53286

In the Linux kernel, the following vulnerability has been resolved: idpf: fix double free and use-after-free in aux device error paths When auxiliary_device_add() fails in idpf_plug_vport_aux_dev() or idpf_plug_core_aux_dev(), the err_aux_dev_add label calls auxiliary_device_uninit() and falls through to err_aux_dev_init. The uninit call will trigger put_device(), which invokes the release callback (idpf_vport_adev_release / idpf_core_adev_release) that frees iadev. The fall-through then reads adev->id from the freed iadev for ida_free() and double-frees iadev with kfree(). Free the IDA slot and clear the back-pointer before uninit, while adev is still valid, then return immediately. Commit 65637c3a1811 ("idpf: fix UAF in RDMA core aux dev deinitialization") fixed the same use-after-free in the matching unplug path in this file but missed both probe error paths.

• CWE-415

• https://git.kernel.org/stable/c/6c77b9510829a424d1b74409b7db9456e3522871Patch
• https://git.kernel.org/stable/c/722b91d5086a249318c9d0e2b36aeac80ba8c808Patch
• https://git.kernel.org/stable/c/f319de7074e1728a9f9ff7134257360c694ec2b2Patch

Published

Jun 26, 2026

Last Modified

Jul 8, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-53280In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-53281In the Linux kernel, the following vulnerability has been re…8.8
• CVE-2026-53282In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-53283In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-53284In the Linux kernel, the following vulnerability has been re…7.5
• CVE-2026-53285In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-53287In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-53288In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-53289In the Linux kernel, the following vulnerability has been re…5.5
• CVE-2026-5329Rapid7 Velociraptor versions prior to 0.76.2 contain an impr…6.5
• CVE-2026-53290In the Linux kernel, the following vulnerability has been re…7.8
• CVE-2026-53291In the Linux kernel, the following vulnerability has been re…5.5