CVE-2026-23019
MediumCVSS 5.5Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In the Linux kernel, a NULL pointer dereference vulnerability was found in the Marvell Prestera network driver. The devlink_alloc() function may return NULL on allocation failure, but the code unconditionally calls devlink_priv() on the returned pointer, causing a system crash.
Risk Assessment
The risk involves a potential kernel panic when memory is exhausted during driver initialization, which could lead to network service disruption.
Recommendation
Immediately update the Linux kernel to a version containing the fix (commit addressing the issue) or apply a security patch from your distribution vendor.
Original NVD description (English source)
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.