CVE-2026-101307

CVE-2026-101307 · Remotely triggerable buffer overflow in tcp_rack

This page contains facts from public vulnerability sources. Check the original advisory before updating.

When the PCM sample array needs to grow, the RACK stack doubles a 16-bit allocation counter. Repeated doublings caused the counter to wrap to zero, resulting in a near-zero-length allocation followed by a copy of the existing samples into the undersized buffer. A remote peer can trigger the expansion by sending a sufficient number of ACKs on an established connection. A remote attacker who can establish a TCP connection to a system using the RACK stack can trigger an out-of-bounds write of approximately 512 KB in the kernel heap possibly resulting in a kernel panic.

CVSS 8.2 · High · EPSS 0.3%

Published

2026-10-15T07:05:02.295Z

Updated

2026-10-15T16:48:11.023Z

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