selinux: check connect-related permissions on TCP Fast Open
Summary
| CVE | CVE-2026-72243 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-15 06:21:51 UTC |
| Updated | 2026-08-18 07:16:54 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 8.4 HIGH from 416baaa9-dc9f-4396-8d5f-8c081fb06d67
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
EPSS: 0.001610000 probability, percentile 0.057520000 (date 2026-08-17)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | Secondary | 8.4 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
| 3.1 | CNA | DECLARED | 8.4 | HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
LocalAttack Complexity
LowPrivileges Required
LowUser Interaction
NoneScope
ChangedConfidentiality
HighIntegrity
HighAvailability
NoneCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected cf60af03ca4e71134206809ea892e49b92a88896 11406d0d7e11b4e525bb2ace2c70107031d058da git | Not specified |
| CNA | Linux | Linux | affected cf60af03ca4e71134206809ea892e49b92a88896 e507633bf76bccf1a6af27771fb0d6e2862b7eac git | Not specified |
| CNA | Linux | Linux | affected cf60af03ca4e71134206809ea892e49b92a88896 d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3 git | Not specified |
| CNA | Linux | Linux | affected cf60af03ca4e71134206809ea892e49b92a88896 fc633a598206d4f23af782db7c0b5f3a82751d2c git | Not specified |
| CNA | Linux | Linux | affected cf60af03ca4e71134206809ea892e49b92a88896 646ebbc5f2ff9147d084e1213143f091026a611c git | Not specified |
| CNA | Linux | Linux | affected cf60af03ca4e71134206809ea892e49b92a88896 44c74d27d1b9aaa99fa8a83640c1223575262b80 git | Not specified |
| CNA | Linux | Linux | affected 3.6 | Not specified |
| CNA | Linux | Linux | unaffected 3.6 semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.178 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.145 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.97 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.40 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.5 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/fc633a598206d4f23af782db7c0b5f3a82751d2c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/11406d0d7e11b4e525bb2ace2c70107031d058da | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/e507633bf76bccf1a6af27771fb0d6e2862b7eac | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/646ebbc5f2ff9147d084e1213143f091026a611c | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/44c74d27d1b9aaa99fa8a83640c1223575262b80 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.