CVE-2026-80987
NTB: ntb_transport: Reject oversized TX buffers
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Sep 11, 2026 |
| Last Updated | Sep 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 < 4890152a3069f5cb58cc24b08cfd5fe95e568fa1 fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 < 668aa3238548584ca9772da9cf43ae8c2389bbf1 fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 < 9b0fa8a9e1057614a533cc3f18b17f82aab028d8 fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 < b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88 fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 < a7f22105a7df8c7fd74d0af27ace6fa94fe03d87 fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 < 6b6bbc6c878d64eacc60877df49fce7b1b6a08d0 fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 < 75a604e9f1cfdebda421062fdf42225ca32154cd fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 < a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7
Linux / Linux
3.9
References
git.kernel.org: https://git.kernel.org/stable/c/4890152a3069f5cb58cc24b08cfd5fe95e568fa1 git.kernel.org: https://git.kernel.org/stable/c/668aa3238548584ca9772da9cf43ae8c2389bbf1 git.kernel.org: https://git.kernel.org/stable/c/9b0fa8a9e1057614a533cc3f18b17f82aab028d8 git.kernel.org: https://git.kernel.org/stable/c/b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88 git.kernel.org: https://git.kernel.org/stable/c/a7f22105a7df8c7fd74d0af27ace6fa94fe03d87 git.kernel.org: https://git.kernel.org/stable/c/6b6bbc6c878d64eacc60877df49fce7b1b6a08d0 git.kernel.org: https://git.kernel.org/stable/c/75a604e9f1cfdebda421062fdf42225ca32154cd git.kernel.org: https://git.kernel.org/stable/c/a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7