CVE-2026-23022 idpf: fix memory leak in idpf_vc_core_deinit()
A memory leak in the idpf network driver can lead to resource exhaustion and denial of service during device resets.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-23022?
CVE-2026-23022 is a medium-severity denial of service vulnerability in Linux kernel, published on 31 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
idpf: fix memory leak in idpf_vc_core_deinit()
Make sure to free hw->lan_regs. Reported by kmemleak during reset:
unreferenced object 0xff1b913d02a936c0 (size 96): comm "kworker/u258:14", pid 2174, jiffies 4294958305 hex dump (first 32 bytes): 00 00 00 c0 a8 ba 2d ff 00 00 00 00 00 00 00 00 ......-......... 00 00 40 08 00 00 00 00 00 00 25 b3 a8 ba 2d ff ..@.......%...-. backtrace (crc 36063c4f): __kmalloc_noprof+0x48f/0x890 idpf_vc_core_init+0x6ce/0x9b0 [idpf] idpf_vc_event_task+0x1fb/0x350 [idpf] process_one_work+0x226/0x6d0 worker_thread+0x19e/0x340 kthread+0x10f/0x250 ret_from_fork+0x251/0x2b0 ret_from_fork_asm+0x1a/0x30
Weakness: CWE-401
Which versions are affected by CVE-2026-23022?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23022?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-23022 being exploited?
There is no known exploitation of CVE-2026-23022 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-23022, DEBIAN-CVE-2026-23022, GHSA-g5x6-9f94-cqrf, UBUNTU-CVE-2026-23022.