CVE-2026-80987

In the Linux kernel, the following vulnerability has been resolved: NTB: ntb_transport: Reject oversized TX buffers ntb_process_tx() handles an oversized buffer by calling tx_handler() with a NULL data pointer and returning success. ntb_netdev therefore neither frees the skb in its completion callback nor takes its enqueue error path, leaking it. Reject oversized buffers in ntb_transport_tx_enqueue() before acquiring a queue entry and return -EMSGSIZE. The caller retains ownership of the buffer, and the preceding netdev patch frees the skb when enqueue returns this permanent error.

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.5% chance of exploitation in the next 30 days; higher than 42% of CVEs (scores of 2026-10-25)

Published

2026-09-11

Modified

2026-10-19

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/4890152a3069f5cb58cc24b08cfd5fe95e568fa1
• https://git.kernel.org/stable/c/668aa3238548584ca9772da9cf43ae8c2389bbf1
• https://git.kernel.org/stable/c/6b6bbc6c878d64eacc60877df49fce7b1b6a08d0
• https://git.kernel.org/stable/c/75a604e9f1cfdebda421062fdf42225ca32154cd
• https://git.kernel.org/stable/c/9b0fa8a9e1057614a533cc3f18b17f82aab028d8

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