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CVE-2026-72243

selinux: check connect-related permissions on TCP Fast Open

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 6.1.178, 6.6.145, 6.12.97, 6.18.40, 7.1.5
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • Linux Linux

    From cf60af03ca4e71134206809ea892e49b92a88896 · fixed in 11406d0d7e11b4e525bb2ace2c70107031d058da; From cf60af03ca4e71134206809ea892e49b92a88896 · fixed in e507633bf76bccf1a6af27771fb0d6e2862b7eac; From cf60af03ca4e71134206809ea892e49b92a88896 · fixed in d028bc080a0dcd6a7f8e1ae1bd32dda696505ba3; From cf60af03ca4e71134206809ea892e49b92a88896 · fixed in fc633a598206d4f23af782db7c0b5f3a82751d2c; From cf60af03ca4e71134206809ea892e49b92a88896 · fixed in 646ebbc5f2ff9147d084e1213143f091026a611c; From cf60af03ca4e71134206809ea892e49b92a88896 · fixed in 44c74d27d1b9aaa99fa8a83640c1223575262b80

  • Linux Linux

    3.6

  • KernelLinux

    From 3.6.0 · fixed in 6.1.178; From 6.2.0 · fixed in 6.6.145; From 6.7.0 · fixed in 6.12.97; From 6.13.0 · fixed in 6.18.40; From 6.19.0 · fixed in 7.1.5

References 6

git.kernel.org