Answer in brief
CVE-2026-80987 records a High severity (CVSS 7.5) vulnerability in NTB: ntb_transport: Reject oversized TX buffers. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <a7f22105a7df8c7fd74d0af27ace6fa94fe03d87 || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <6b6bbc6c878d64eacc60877df49fce7b1b6a08d0 || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <75a604e9f1cfdebda421062fdf42225ca32154cd || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7 | a7f22105a7df8c7fd74d0af27ace6fa94fe03d87, 6b6bbc6c878d64eacc60877df49fce7b1b6a08d0, 75a604e9f1cfdebda421062fdf42225ca32154cd, a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7 |
| Linux/Linuxgeneric | 3.9 | Not reported |
| Linux/Linuxgeneric | >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <4890152a3069f5cb58cc24b08cfd5fe95e568fa1 || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <668aa3238548584ca9772da9cf43ae8c2389bbf1 || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <9b0fa8a9e1057614a533cc3f18b17f82aab028d8 || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88 || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <a7f22105a7df8c7fd74d0af27ace6fa94fe03d87 || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <6b6bbc6c878d64eacc60877df49fce7b1b6a08d0 || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <75a604e9f1cfdebda421062fdf42225ca32154cd || >=fce8a7bb5b4bfb8a27324703fd5b002ee9247e90 <a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7 | 4890152a3069f5cb58cc24b08cfd5fe95e568fa1, 668aa3238548584ca9772da9cf43ae8c2389bbf1, 9b0fa8a9e1057614a533cc3f18b17f82aab028d8, b6db88cde0fb5c3bd2d3cd2bebcc06b5ce146e88, a7f22105a7df8c7fd74d0af27ace6fa94fe03d87, 6b6bbc6c878d64eacc60877df49fce7b1b6a08d0, 75a604e9f1cfdebda421062fdf42225ca32154cd, a4f2387db6f1cc2f03abba7f3a6807ad61e26ff7 |
Published upstream
Sep 11, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 11, 2026
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.
Quoted source text, attributed separately from HOL analysis.