xfrm: input: hold netns during deferred transport reinjection
In the Linux kernel, the following vulnerability has been resolved: xfrm: input: hold netns during deferred transport reinjection Transport-mode reinjection stores a struct net pointer in skb->cb and uses it later from xfrm_trans_reinject(). That pointer must stay valid until the deferred callback runs. Take a netns reference when queueing deferred reinjection work and drop it after the callback completes. Use maybe_get_net() so the queueing path does not revive a namespace that is already being torn down. This keeps the existing workqueue design and fixes the netns lifetime handling in one place for all users of xfrm_trans_queue_net().
CVE-2026-63919
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-2026-63919
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": "7b3801927e52f8621de311277f7fc727635019e7",
"lessThan": "7ee59eda8820b758ed29e1cd3222359c7b97302c",
"versionType": "git"
},
{
"status": "affected",
"version": "7b3801927e52f8621de311277f7fc727635019e7",
"lessThan": "2df7059a18afb7d3aee6c36cad5d371c198111d4",
"versionType": "git"
},
{
"status": "affected",
"version": "7b3801927e52f8621de311277f7fc727635019e7",
"lessThan": "8dfabcba6a943a7a02ebe1e1637c361ba96acbaa",
"versionType": "git"
},
{
"status": "affected",
"version": "7b3801927e52f8621de311277f7fc727635019e7",
"lessThan": "48ce101cd630d6745b6923b5bad8358bc4c119da",
"versionType": "git"
},
{
"status": "affected",
"version": "7b3801927e52f8621de311277f7fc727635019e7",
"lessThan": "55ddfc41451f01c588089cd74957a05311b6f202",
"versionType": "git"
},
{
"status": "affected",
"version": "7b3801927e52f8621de311277f7fc727635019e7",
"lessThan": "9f7ebb45a83afc3216e855e57d51bb4bc9b5232e",
"versionType": "git"
},
{
"status": "affected",
"version": "7b3801927e52f8621de311277f7fc727635019e7",
"lessThan": "9f67a36e91bb50d358760f381f233913fe5c09f8",
"versionType": "git"
},
{
"status": "affected",
"version": "7b3801927e52f8621de311277f7fc727635019e7",
"lessThan": "c16f74dc1d75d0e2e7670076d5375deda110ebeb",
"versionType": "git"
}
],
"programFiles": [
"net/xfrm/xfrm_input.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "5.10.259",
"versionType": "semver",
"lessThanOrEqual": "5.10.*"
},
{
"status": "unaffected",
"version": "5.15.210",
"versionType": "semver",
"lessThanOrEqual": "5.15.*"
},
{
"status": "unaffected",
"version": "6.1.176",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.143",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.93",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.35",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.0.12",
"versionType": "semver",
"lessThanOrEqual": "7.0.*"
},
{
"status": "unaffected",
"version": "7.1",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"net/xfrm/xfrm_input.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-63919
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #40892 · Revision 1
- Added to Heist Feed
- Publisher date