What’s Vulnerable › Vulnerabilities

CVE-2026-68331: dpaa2-eth: put MAC endpoint device on disconnect

• Severity: unknown
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-10 · updated 2026-08-19

Description

In the Linux kernel, the following vulnerability has been resolved: dpaa2-eth: put MAC endpoint device on disconnect fsl_mc_get_endpoint() returns the MAC endpoint device with a reference taken through device_find_child(). The Ethernet connect path stores that device in mac->mc_dev and keeps it for the lifetime of the connected MAC object. However, the disconnect path only disconnects and closes the MAC before freeing the dpaa2_mac object. It does not drop the endpoint device reference stored in mac->mc_dev, so every successful connect leaks that device reference when the MAC is later disconnected. Drop the endpoint device reference after closing the MAC and before freeing the dpaa2_mac object.

Affected products

• Linux kernel: 5.5 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1974127776da46a000c61f36d4946799ea6d4f51
• https://git.kernel.org/stable/c/6b6ffdb9ca4547a3c4c274aa3e25b6c68dbc62e1
• https://git.kernel.org/stable/c/915012e923316b8b5d5bf8fc771617b47bd7572d
• https://git.kernel.org/stable/c/a3cecf169cc652b558d08661bb6ce55e4c933ec0
• https://git.kernel.org/stable/c/b4b201cc93ff70150853aba03e14d314d1980ca0
• https://git.kernel.org/stable/c/e23e4a3b9dfd893469c731318d409cdf04fb1ddf
• https://git.kernel.org/stable/c/f112df0744e2d77baa68eeebb860021bbaaa022a

Get alerted when CVE-2026-68331 or the next vulnerability affects your stack