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Message-ID: <afKs-tphZDvl3GIX@panix.com>
Date: Wed, 29 Apr 2026 21:14:34 -0400
From: Zube <Zube@...ix.com>
To: oss-security@...ts.openwall.com
Subject: Re: CVE-2026-31431: CopyFail: linux local privilege
scalation
> > # echo "install algif_aead /bin/false" > /etc/modprobe.d/disable-algif.conf
> > # rmmod algif_aead
>
> Brad Spengler has been pointing out that this won't work on a few common
> enterprise kernels where CONFIG_CRYPTO_USER_API_AEAD=y (rather than m).
An initial test of adding:
initcall_blacklist=algif_aead_init
to the kernel command line and rebooting seems to block the exploit.
Cheers.
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