Re: MDWE does not prevent read-only, executable, shared memory regions to be updated by backing file writes

Bugspray Bot <[email protected]> Thu, 12 Sep 2024 21:10:10 +0000

Newsgroups	dev.linux.lists.bugs,org.kvack.linux-mm
Message-ID	<[email protected]>

alip writes via Kernel.org Bugzilla:

I am sorry, I forgot to post the output of the PoC.
On a system with Linux kernel 6.8 I get:
⇒  ./a.out
[*] Mapped Content: malicious code
[!] RX memory updated thru a backing file write under MDWE.

View: https://bugzilla.kernel.org/show_bug.cgi?id=219227#c1
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