mptcp: reclaim forward-allocated memory on RX path errors
In the Linux kernel, the following vulnerability has been resolved: mptcp: reclaim forward-allocated memory on RX path errors After commit 9db5b3cec4ec ("mptcp: borrow forward memory from subflow"), errors in the receive path prior to queueing skbs into the receive queue do not trigger forward-allocated memory reclaiming. Prevent forward memory from growing unboundedly in pathological drop scenarios by explicitly reclaiming memory when skbs are dropped.
CVE-2026-80588
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-2026-80588
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": "a84164847b1e0a106ebc46821e5d2f9b775c9dc8",
"lessThan": "473f1a5ab2abc98dd9e74b95b9c23c66c47535cc",
"versionType": "git"
},
{
"status": "affected",
"version": "9db5b3cec4ec1c0cd3239689f5c8653d691a1754",
"lessThan": "8277f48a06d3aa1441f6d0b6998ccc0360d30ed8",
"versionType": "git"
},
{
"status": "affected",
"version": "9db5b3cec4ec1c0cd3239689f5c8653d691a1754",
"lessThan": "41b49a8b914ec7dcb03eae93fb27f3c464078644",
"versionType": "git"
},
{
"status": "affected",
"version": "6.18.35",
"lessThan": "6.18.46",
"versionType": "semver"
}
],
"programFiles": [
"net/mptcp/protocol.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.19"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.19",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.46",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.10",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/mptcp/protocol.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-80588
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #34336 · Revision 1
- Added to Heist Feed
- Publisher date