CVE-2026-80987NTB: ntb_transport: Reject oversized TX buffers
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 before 4890152a3069f5cb58cc24b08cfd5fe95e568fa1; from fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 before 668aa3238548584ca9772da9cf43ae8c2389bbf1; from fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 before 9b0fa8a9e1057614a533cc3f18b17f82aab028d8; from fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 before b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88; from fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 before a7f22105a7df8c7fd74d0af27ace6fa94fe03d87; from fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 before 6b6bbc6c878d64eacc60877df49fce7b1b6a08d0; from fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 before 75a604e9f1cfdebda421062fdf42225ca32154cd; from fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 before a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7 | CNA record |
References
- https://git.kernel.org/stable/c/4890152a3069f5cb58cc24b08cfd5fe95e568fa1
- https://git.kernel.org/stable/c/668aa3238548584ca9772da9cf43ae8c2389bbf1
- https://git.kernel.org/stable/c/9b0fa8a9e1057614a533cc3f18b17f82aab028d8
- https://git.kernel.org/stable/c/b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88
- https://git.kernel.org/stable/c/a7f22105a7df8c7fd74d0af27ace6fa94fe03d87
- https://git.kernel.org/stable/c/6b6bbc6c878d64eacc60877df49fce7b1b6a08d0
- https://git.kernel.org/stable/c/75a604e9f1cfdebda421062fdf42225ca32154cd
- https://git.kernel.org/stable/c/a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.