CVE-2026-64212 wifi: iwlwifi: mld: don't dereference a pointer before NULL checking it

What is CVE-2026-64212?

CVE-2026-64212 is a medium-severity vulnerability in Linux kernel, published on 24 Jul 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:

wifi: iwlwifi: mld: don't dereference a pointer before NULL checking it

In iwl_mld_remove_link, the link->fw_id is saved at the beginning of the function so we have it after we freed the link.

But the link pointer can be NULL, and is not checked when the fw_id is stored.

Fix it by simply freeing the link at the end of the function.

fFixes: 0e66a39f4f0e ("wifi: iwlwifi: fix potential use after free in iwl_mld_remove_link()")

Weakness: CWE-476

Which versions are affected by CVE-2026-64212?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-64212?

Apply the vendor's patch.

Is CVE-2026-64212 being exploited?

There is no known exploitation of CVE-2026-64212 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-64212, DEBIAN-CVE-2026-64212, GHSA-f3qr-xjfh-cqgx, ROOT-OS-UBUNTU-2204-CVE-2026-64212, UBUNTU-CVE-2026-64212.