CVE-2026-80988Medium· 5.5▾ SunlitIn the Linux kernel, the following vulnerability has been resolved: NTB: ntb_transport: Fail TX enqueue when the QP link is down Commit f195a1a6fe41 ("ntb: Drop packets when qp link is down") meant to make ntb_transport_tx_enqueue() dr…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 30.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Sep 12.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
0.2%
— → 4.1
none → medium
— → 4.1
none → medium
— → 5.5
none → medium
0.2% → 0.2%
Last analysed / modified upstream
In the Linux kernel, the following vulnerability has been resolved:
NTB: ntb_transport: Fail TX enqueue when the QP link is down
Commit f195a1a6fe41 ("ntb: Drop packets when qp link is down") meant to make ntb_transport_tx_enqueue() drop packets submitted while the QP link is down, but it only returns 0 without consuming the packet. Zero means success by this function's contract, so ntb_netdev reports NETDEV_TX_OK and forgets the skb: nothing queued it, nothing frees it, and it leaks, one skb for every transmit racing a link-down.
Return -ENOLINK instead, restoring the contract that a non-zero return leaves the buffer owned by the caller. With the preceding patch, ntb_netdev frees the skb on non-retryable enqueue failures and returns NETDEV_TX_OK, so a packet racing with link-down is dropped without leaking or entering a busy retry loop.
Linux >= 3cfdc448e8bfa8a7eaa5af87f357330566124b78 < 76c9ccc0c6bebfc74c0e727eda67687f5103ab06Linux >= bfa051f650a7708183bd86901ca4645dcf88c486 < 96d792c65b9d5f7f9dd86a1004315db59e450c07Linux >= 4f4af6b8b7a23fa37decaf43b55403e6bfd8e219 < 45cc11035165918dd1f81796ea98f81ece20d361Linux >= f195a1a6fe416882984f8bd6c61afc1383171860 < e6cc541fab01099fd8efadfa4f13afdf118bf536Linux >= f195a1a6fe416882984f8bd6c61afc1383171860 < 5eca0d899a3be661a7e2caaaa7467a6fa15d756cLinux >= f195a1a6fe416882984f8bd6c61afc1383171860 < 894e136b432da75c0352c80299807a5c4b04f167Linux >= f195a1a6fe416882984f8bd6c61afc1383171860 < 89177732fe1653bbfef10cf5d99bf20cf57762c2Linux >= f195a1a6fe416882984f8bd6c61afc1383171860 < 873ce713fef5dde0939220f04f3484ec86a16fbaLinux aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9Linux a8986a61ebee0b54c5d648444fbae09bd1c6dcd2Linux 94491412a2afc8a5aea4c5b455aed86d3486f0b1Linux c2cd5d993f57f819d46fe62387d3cc34d8468e60Linux 449b1978d4e50b14b2a4de3a26d0b074593926a3Linux >= 5.10.195 < 5.10.270Linux >= 5.15.132 < 5.15.221Linux >= 6.1.53 < 6.1.188Linux >= 4.14.326 < 4.15Linux >= 4.19.295 < 4.20Linux >= 5.4.257 < 5.5Linux >= 6.4.16 < 6.5Linux >= 6.5.3 < 6.6Linux 6.6Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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