CVE-2026-23019

Summary

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

net: marvell: prestera: fix NULL dereference on devlink_alloc() failure

devlink_alloc() may return NULL on allocation failure, but prestera_devlink_alloc() unconditionally calls devlink_priv() on the returned pointer.

This leads to a NULL pointer dereference if devlink allocation fails. Add a check for a NULL devlink pointer and return NULL early to avoid the crash.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 < 8a4333b2818f0d853b43e139936c20659366e4a0affected
LinuxLinux34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 < 325aea74be7e192b5c947c782da23b0d19a5fda2affected
LinuxLinux34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 < 94e070cd50790317fba7787ae6006934b7edcb6faffected
LinuxLinux34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 < 3950054c9512add0cc79ab7e72b6d2f9f675e25baffected
LinuxLinux34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 < 326a4b7e61d01db3507f71c8bb5e85362f607064affected
LinuxLinux34dd1710f5a3c9a7dc78e1ff6de69a19d407db25 < a428e0da1248c353557970848994f35fd3f005e2affected
LinuxLinux5.10affected
LinuxLinux0 < 5.10unaffected
LinuxLinux5.15.198 <= 5.15.*unaffected
LinuxLinux6.1.161 <= 6.1.*unaffected
LinuxLinux6.6.121 <= 6.6.*unaffected
LinuxLinux6.12.66 <= 6.12.*unaffected
LinuxLinux6.18.6 <= 6.18.*unaffected
LinuxLinux6.19 <= *unaffected

Weaknesses

References