CVE-2026-46126 RDMA/mana: Fix mana_destroy_wq_obj() cleanup in mana_ib_create_qp_rss()
A bug in the Linux kernel's RDMA driver causes incorrect resource cleanup during error handling, potentially leading to system instability or denial of service.
- 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-2026-46126?
CVE-2026-46126 is a medium-severity vulnerability in Linux kernel, published on 28 May 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:
RDMA/mana: Fix mana_destroy_wq_obj() cleanup in mana_ib_create_qp_rss()
Sashiko points out there are two bugs here in the error unwind flow, both related to how the WQ table is unwound.
First there is a double i-- on the first failure path due to the while loop having a i--, remove it.
Second if mana_ib_install_cq_cb() fails then mana_create_wq_obj() is not undone due to the above i--.
Which versions are affected by CVE-2026-46126?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-46126?
Apply the vendor's patch.
Is CVE-2026-46126 being exploited?
There is no known exploitation of CVE-2026-46126 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-46126, DEBIAN-CVE-2026-46126, GHSA-7m9c-w4qh-f86c, ROOT-OS-UBUNTU-2404-CVE-2026-46126, UBUNTU-CVE-2026-46126.