Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3cfdc448e8bfa8a7eaa5af87f357330566124b78 before 76c9ccc0c6bebfc74c0e727eda67687f5103ab06; affected bfa051f650a7708183bd86901ca4645dcf88c486 before 96d792c65b9d5f7f9dd86a1004315db59e450c07; affected 4f4af6b8b7a23fa37decaf43b55403e6bfd8e219 before 45cc11035165918dd1f81796ea98f81ece20d361; affected f195a1a6fe416882984f8bd6c61afc1383171860 before e6cc541fab01099fd8efadfa4f13afdf118bf536; affected f195a1a6fe416882984f8bd6c61afc1383171860 before 5eca0d899a3be661a7e2caaaa7467a6fa15d756c; affected f195a1a6fe416882984f8bd6c61afc1383171860 before 894e136b432da75c0352c80299807a5c4b04f167; affected f195a1a6fe416882984f8bd6c61afc1383171860 before 89177732fe1653bbfef10cf5d99bf20cf57762c2; affected f195a1a6fe416882984f8bd6c61afc1383171860 before 873ce713fef5dde0939220f04f3484ec86a16fba; affected aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9; affected a8986a61ebee0b54c5d648444fbae09bd1c6dcd2; affected 94491412a2afc8a5aea4c5b455aed86d3486f0b1; affected c2cd5d993f57f819d46fe62387d3cc34d8468e60; affected 449b1978d4e50b14b2a4de3a26d0b074593926a3; affected 5.10.195 before 5.10.270; affected 5.15.132 before 5.15.221; affected 6.1.53 before 6.1.188; affected 4.14.326 before 4.15; affected 4.19.295 before 4.20; affected 5.4.257 before 5.5; affected 6.4.16 before 6.5; affected 6.5.3 before 6.6 |
| Linux / Linux | affected 6.6; unaffected 0 before 6.6; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/76c9ccc0c6bebfc74c0e727eda67687f5103ab06
- https://git.kernel.org/stable/c/96d792c65b9d5f7f9dd86a1004315db59e450c07
- https://git.kernel.org/stable/c/45cc11035165918dd1f81796ea98f81ece20d361
- https://git.kernel.org/stable/c/e6cc541fab01099fd8efadfa4f13afdf118bf536
- https://git.kernel.org/stable/c/5eca0d899a3be661a7e2caaaa7467a6fa15d756c
- https://git.kernel.org/stable/c/894e136b432da75c0352c80299807a5c4b04f167
- https://git.kernel.org/stable/c/89177732fe1653bbfef10cf5d99bf20cf57762c2
- https://git.kernel.org/stable/c/873ce713fef5dde0939220f04f3484ec86a16fba