Memory Management Issue in Linux Kernel's FEC Driver

CVE-2025-21676

What is CVE-2025-21676?

A vulnerability exists in the Linux kernel's FEC driver where the fec_enet_update_cbd function fails to properly manage memory allocation errors. Specifically, when calling the page_pool_dev_alloc_pages function, a NULL pointer can be used — which leads to system crashes under memory pressure. This issue may not occur frequently but can surface during high-load scenarios, such as writing over a SMB share. The proper fix involves dropping the current packet when a memory allocation error is detected to ensure system stability.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch →

References