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CVE-2026-53264 Linux net/sched LPE: Detection & IOCs

STAR Labs' public exploit escalates privileges on CentOS Stream 9 via CVE-2026-53264, with 9 detection rules, 11 IOCs and a free Splunk SPL rule.

Read the full threat intel for CVE-2026-53264 Linux net/sched LPE: Detection & IOCs →

Chapters

  1. 0:00The hookPublic Linux exploit: root in roughly 10-70 seconds.
  2. 0:05The storyA researcher documented a reliable exploit.
  3. 0:12Attack pathStarts as an unprivileged local user.
  4. 0:25AttributionNo threat actor is attributed.
  5. 0:30Indicators of compromise10 indicators to hunt: 4 hashes, 5 file names and 1 path.
  6. 0:37MITRE ATT&CK techniques7 ATT&CK techniques, from execution to collection.
  7. 0:42Remediation4 steps now: Apply the upstream stable kernel patch.
  8. 0:50Detection rules9 detection rules, in SPL, KQL and Sigma.
Transcript

0:00Public Linux exploit: root in roughly 10-70 seconds.

0:05A researcher documented a reliable exploit.

0:08Both bugs are fixed upstream.

0:12Starts as an unprivileged local user.

0:15Then a race condition in packet scheduling.

0:17In a test, the public code reached root.

0:20A second flaw reached root on Arch.

0:26No threat actor is attributed. Confidence: low.

0:3110 indicators to hunt: 4 hashes, 5 file names and 1 path.

0:377 ATT&CK techniques, from execution to collection.

0:424 steps now: Apply the upstream stable kernel patch.

0:509 detection rules, in SPL, KQL and Sigma.

0:56Threadlinqs. The unified security engineering platform.