CVE-2026-68331

Summary

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 Software

VendorProductVersion RangeStatus
LinuxLinux71947923089353f23f4f210864903c4dcf2c1696 < 915012e923316b8b5d5bf8fc771617b47bd7572daffected
LinuxLinux71947923089353f23f4f210864903c4dcf2c1696 < e23e4a3b9dfd893469c731318d409cdf04fb1ddfaffected
LinuxLinux71947923089353f23f4f210864903c4dcf2c1696 < f112df0744e2d77baa68eeebb860021bbaaa022aaffected
LinuxLinux71947923089353f23f4f210864903c4dcf2c1696 < a3cecf169cc652b558d08661bb6ce55e4c933ec0affected
LinuxLinux71947923089353f23f4f210864903c4dcf2c1696 < b4b201cc93ff70150853aba03e14d314d1980ca0affected
LinuxLinux5.5affected
LinuxLinux0 < 5.5unaffected
LinuxLinux6.6.148 <= 6.6.*unaffected
LinuxLinux6.12.101 <= 6.12.*unaffected
LinuxLinux6.18.42 <= 6.18.*unaffected
LinuxLinux7.1.6 <= 7.1.*unaffected
LinuxLinux7.2-rc5 <= *unaffected

Weaknesses

References