CVE-2026-80988 | 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, not
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.
- 🔗 git.kernel.org/stable/c/76c9ccc0c6bebfc74c0e727eda67687f…
- 🔗 git.kernel.org/stable/c/96d792c65b9d5f7f9dd86a1004315db5…
- 🔗 git.kernel.org/stable/c/45cc11035165918dd1f81796ea98f81e…
- 🔗 git.kernel.org/stable/c/e6cc541fab01099fd8efadfa4f13afdf…
- 🔗 git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6f…
- 🔗 git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c…
- 🔗 git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20c…
- 🔗 git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec…
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CVE-2026-80988 | 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, not
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