Answer in brief
CVE-2026-72243 records a High severity (CVSS 8.4) vulnerability in selinux: check connect-related permissions on TCP Fast Open. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <11406d0d7e11b4e525bb2ace2c70107031d058da || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e507633bf76bccf1a6af27771fb0d6e2862b7eac || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3 || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <fc633a598206d4f23af782db7c0b5f3a82751d2c || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <646ebbc5f2ff9147d084e1213143f091026a611c || >=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <44c74d27d1b9aaa99fa8a83640c1223575262b80 || >=0 <6.1.178 || >=0 <6.6.145 || >=0 <6.12.97 || >=0 <6.18.40 || >=0 <7.1.5 | 11406d0d7e11b4e525bb2ace2c70107031d058da, e507633bf76bccf1a6af27771fb0d6e2862b7eac, d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3, fc633a598206d4f23af782db7c0b5f3a82751d2c, 646ebbc5f2ff9147d084e1213143f091026a611c, 44c74d27d1b9aaa99fa8a83640c1223575262b80, 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5 |
| Linux/Linuxgeneric | >=cf60af03ca4e71134206809ea892e49b92a88896 <11406d0d7e11b4e525bb2ace2c70107031d058da || >=cf60af03ca4e71134206809ea892e49b92a88896 <e507633bf76bccf1a6af27771fb0d6e2862b7eac || >=cf60af03ca4e71134206809ea892e49b92a88896 <d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3 || >=cf60af03ca4e71134206809ea892e49b92a88896 <fc633a598206d4f23af782db7c0b5f3a82751d2c || >=cf60af03ca4e71134206809ea892e49b92a88896 <646ebbc5f2ff9147d084e1213143f091026a611c || >=cf60af03ca4e71134206809ea892e49b92a88896 <44c74d27d1b9aaa99fa8a83640c1223575262b80 | 11406d0d7e11b4e525bb2ace2c70107031d058da, e507633bf76bccf1a6af27771fb0d6e2862b7eac, d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3, fc633a598206d4f23af782db7c0b5f3a82751d2c, 646ebbc5f2ff9147d084e1213143f091026a611c, 44c74d27d1b9aaa99fa8a83640c1223575262b80 |
| Linux/Linuxgeneric | 3.6 | Not reported |
Published upstream
Aug 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 18, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 15, 2026
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.
Quoted source text, attributed separately from HOL analysis.