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v12-security-pocs/dirtydecrypt
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stong a82f4368ab add dirtydecrypt / dirtycbc
2026-05-17 11:32:12 +09:00
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poc.c add dirtydecrypt / dirtycbc 2026-05-17 11:32:12 +09:00
README.md add dirtydecrypt / dirtycbc 2026-05-17 11:32:12 +09:00

README.md

DirtyDecrypt / DirtyCBC

DirtyDecrypt, also known as DirtyCBC, is a variant of CopyFail / DirtyFrag / Fragnesia. We found and reported this on May 9, 2026, but was informed it was a duplicate by the maintainers. We're releasing it now since it's patched on mainline. It's a rxgk pagecache write due to missing COW guard in rxgk_decrypt_skb. See poc.c for more details.

DirtyDecrypt was discovered autonomously with V12 by Aaron Esau of the V12 security team.

Want to find issues like this in your own code? Try V12 at v12.sh.

$ sha256sum ./poc.c
8054e424466ed2c353b94fb25643e17bef50b31be95038e1c700156357e2d74b  ./poc.c