NTB: ntb_transport: Fail TX enqueue when the QP link is down
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.
CVE-2026-80988
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-80988
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3cfdc448e8bfa8a7eaa5af87f357330566124b78",
"lessThan": "76c9ccc0c6bebfc74c0e727eda67687f5103ab06",
"versionType": "git"
},
{
"status": "affected",
"version": "bfa051f650a7708183bd86901ca4645dcf88c486",
"lessThan": "96d792c65b9d5f7f9dd86a1004315db59e450c07",
"versionType": "git"
},
{
"status": "affected",
"version": "4f4af6b8b7a23fa37decaf43b55403e6bfd8e219",
"lessThan": "45cc11035165918dd1f81796ea98f81ece20d361",
"versionType": "git"
},
{
"status": "affected",
"version": "f195a1a6fe416882984f8bd6c61afc1383171860",
"lessThan": "e6cc541fab01099fd8efadfa4f13afdf118bf536",
"versionType": "git"
},
{
"status": "affected",
"version": "f195a1a6fe416882984f8bd6c61afc1383171860",
"lessThan": "5eca0d899a3be661a7e2caaaa7467a6fa15d756c",
"versionType": "git"
},
{
"status": "affected",
"version": "f195a1a6fe416882984f8bd6c61afc1383171860",
"lessThan": "894e136b432da75c0352c80299807a5c4b04f167",
"versionType": "git"
},
{
"status": "affected",
"version": "f195a1a6fe416882984f8bd6c61afc1383171860",
"lessThan": "89177732fe1653bbfef10cf5d99bf20cf57762c2",
"versionType": "git"
},
{
"status": "affected",
"version": "f195a1a6fe416882984f8bd6c61afc1383171860",
"lessThan": "873ce713fef5dde0939220f04f3484ec86a16fba",
"versionType": "git"
},
{
"status": "affected",
"version": "aa6d6ed213b62cbdb09ea32abbfa085dd987a0c9",
"versionType": "git"
},
{
"status": "affected",
"version": "a8986a61ebee0b54c5d648444fbae09bd1c6dcd2",
"versionType": "git"
},
{
"status": "affected",
"version": "94491412a2afc8a5aea4c5b455aed86d3486f0b1",
"versionType": "git"
},
{
"status": "affected",
"version": "c2cd5d993f57f819d46fe62387d3cc34d8468e60",
"versionType": "git"
},
{
"status": "affected",
"version": "449b1978d4e50b14b2a4de3a26d0b074593926a3",
"versionType": "git"
},
{
"status": "affected",
"version": "5.10.195",
"lessThan": "5.10.270",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.15.132",
"lessThan": "5.15.221",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.1.53",
"lessThan": "6.1.188",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.14.326",
"lessThan": "4.15",
"versionType": "semver"
},
{
"status": "affected",
"version": "4.19.295",
"lessThan": "4.20",
"versionType": "semver"
},
{
"status": "affected",
"version": "5.4.257",
"lessThan": "5.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.4.16",
"lessThan": "6.5",
"versionType": "semver"
},
{
"status": "affected",
"version": "6.5.3",
"lessThan": "6.6",
"versionType": "semver"
}
],
"programFiles": [
"drivers/ntb/ntb_transport.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.270",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.221",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.188",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.157",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/ntb/ntb_transport.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80988
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34945 · Revision 1
- Added to Heist Feed
- Publisher date