selinux: check connect-related permissions on TCP Fast Open
In the Linux kernel, the following vulnerability has been resolved: selinux: check connect-related permissions on TCP Fast Open Similar to Landlock, SELinux was not updated when TCP Fast Open support was introduced to ensure connect-related permissions are checked when using TCP Fast Open. Update its socket_sendmsg() hook to call selinux_socket_connect() when MSG_FASTOPEN is passed.
CVE-2026-72243
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-2026-72243
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": "cf60af03ca4e71134206809ea892e49b92a88896",
"lessThan": "11406d0d7e11b4e525bb2ace2c70107031d058da",
"versionType": "git"
},
{
"status": "affected",
"version": "cf60af03ca4e71134206809ea892e49b92a88896",
"lessThan": "e507633bf76bccf1a6af27771fb0d6e2862b7eac",
"versionType": "git"
},
{
"status": "affected",
"version": "cf60af03ca4e71134206809ea892e49b92a88896",
"lessThan": "d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3",
"versionType": "git"
},
{
"status": "affected",
"version": "cf60af03ca4e71134206809ea892e49b92a88896",
"lessThan": "fc633a598206d4f23af782db7c0b5f3a82751d2c",
"versionType": "git"
},
{
"status": "affected",
"version": "cf60af03ca4e71134206809ea892e49b92a88896",
"lessThan": "646ebbc5f2ff9147d084e1213143f091026a611c",
"versionType": "git"
},
{
"status": "affected",
"version": "cf60af03ca4e71134206809ea892e49b92a88896",
"lessThan": "44c74d27d1b9aaa99fa8a83640c1223575262b80",
"versionType": "git"
}
],
"programFiles": [
"security/selinux/hooks.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "3.6"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "3.6",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.1.178",
"versionType": "semver",
"lessThanOrEqual": "6.1.*"
},
{
"status": "unaffected",
"version": "6.6.145",
"versionType": "semver",
"lessThanOrEqual": "6.6.*"
},
{
"status": "unaffected",
"version": "6.12.97",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.40",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.1.5",
"versionType": "semver",
"lessThanOrEqual": "7.1.*"
},
{
"status": "unaffected",
"version": "7.2",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"security/selinux/hooks.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-72243
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #32984 · Revision 1
- Added to Heist Feed
- Publisher date