CVE-2026-68333

Summary

In the Linux kernel, the following vulnerability has been resolved:

dpaa2-switch: put MAC endpoint device on disconnect

fsl_mc_get_endpoint() returns the MAC endpoint device with a reference taken through device_find_child(). The switch port 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 closes the MAC and frees 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 before freeing the dpaa2_mac object.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux84cba72956fddf29ba666f885c39ed147024c125 < 1f4ca61b7a93de3dfa5161bcd38ecb99bb091c38affected
LinuxLinux84cba72956fddf29ba666f885c39ed147024c125 < 680eecc850d36a280df9780496bc603fec17b2d6affected
LinuxLinux84cba72956fddf29ba666f885c39ed147024c125 < 26ac2d3602347f0377fbcd5214bc28a9d735ae68affected
LinuxLinux84cba72956fddf29ba666f885c39ed147024c125 < c27694ff6748e08fcd2fdba89018439d75b8198faffected
LinuxLinux84cba72956fddf29ba666f885c39ed147024c125 < 4c1eabbef7a1707635652e956e39db1269c3af2baffected
LinuxLinux5.15affected
LinuxLinux0 < 5.15unaffected
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