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mongodb wiredtiger cache OOM kill detection#110

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tonymeehan merged 2 commits intoprequel-dev:mainfrom
Evad0:mongodb-wiredtiger
Jul 9, 2025
Merged

mongodb wiredtiger cache OOM kill detection#110
tonymeehan merged 2 commits intoprequel-dev:mainfrom
Evad0:mongodb-wiredtiger

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@Evad0 Evad0 commented Jul 6, 2025 •
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CRE rule MongoDB WiredTiger cache OOM kill detection (CRE-2025-0113) Detects MongoDB Out-Of-Memory kills caused by WiredTiger cache exhaustion. Cache pressure patterns indicate dirty page eviction failures leading to uncontrolled memory growth and OS termination.

  • Add database tags: mongodb, wiredtiger, oom-kill, cache-eviction, critical-failure, database-availability
  • Add category: database-availability
  • Validated against MongoDB 8.0 with 300MB container limit triggering OOM

/claim #94
/close #94

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Reproduction setup with Docker Compose + memory pressure script
Reproducible test setup (Maintainers invited): MongoDB-WiredTiger

Live CRE Link: CRE PLAYGROUND LINK

Run test
./setup.sh
./reproduce.sh

Filter logs and test CRE rule
./filter-logs.sh
cat test-filtered.log | preq -r mongodb-wiredtiger-oom.yaml -d

@algora-pbc algora-pbc bot mentioned this pull request Jul 6, 2025
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Evad0 commented Jul 6, 2025

test.mp4

@tonymeehan tonymeehan merged commit d24389a into prequel-dev:main Jul 9, 2025
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[Multiple Winners] MongoDB: Reproduce A High-Severity Failure & Write a Detection Rule [Submit by July 6 11:59 pm ET]

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