CVE-2026-31431 “Copy Fail”

[flyntstoneMember]

This kernel bugs seems like it affects a lot of systems:

https://coderoasis.com/cve-2026-31431-copy-fail-linux-kernel-privilege-escalation/
https://security-tracker.debian.org/tracker/CVE-2026-31431?ref=coderoasis.com

I am wondering if it is handled in antiX updates.

Thanks.

[RobinMember]

flyntstone wrote:

I am wondering if it is handled in antiX updates.

Yes. You’ll simply have to install the updated kernels. For 64 bit (antiX 23 and 26) these are already available, for 32 bit and also for antiX 21/22 still brewing, if I’m not mistaken.

If you need them before they hit the apt mirrors, you can fetch them manually from here: Bookworm and Trixie

Windows is like a submarine. Open a window and serious problems will start.

[Xunzi_23Member]

Thanks for the Kernel updates @anticapitalista.

Downloaded from https://repo.antixlinux.com/uploads/trixie/main/

For less experienced users. Basic instructions for Kernel upgrade.
Local repos still not in synch at download time

Installed setup, antiX 26

Entered sudo apt install in to the terminal, dragged and dropped the downloaded debs in to the terminal window.
that is the linux Image and modules.
Tapped enter, keyed in passwd, install worked fine as usual.

Running live, did above then used the Live USB Kernel Updater Tool started from the control center.

followed the instructions, rebooted at the end of the procedure.

uname -r shows 6.6.137-antix.1-amd64-smp so all ok.

[sybokMember]

Thanks for the link and newer kernels (anyone involved).

The link contains newer kernels for 5.10 (EOL: 2026-12), no newer version for 6.1 (EOL: 2027-12).
Was release of an antiX kernel from the 6.1 series a test or was it abandoned it in favor of 6.6 (both share the projected EOL)?

[anticapitalistaForum Admin]

sybok wrote:

Thanks for the link and newer kernels (anyone involved).
…
Was release of an antiX kernel from the 6.1 series a test or was it abandoned it in favor of 6.6 (both share the projected EOL)?

The latter

Philosophers have interpreted the world in many ways; the point is to change it.

antiX with runit - leaner and meaner.

[PPCMember]

Is it advised to run this command to mitigate the problem?

echo "install algif_aead /bin/false" > /etc/modprobe.d/disable-algif.conf
rmmod algif_aead 2>/dev/null || true

I’ve seen it mentioned in many places, including here (where I copied it from): https://blog.toolslib.net/2026/04/30/cve-2026-31431-copy-fail-what-you-need-to-know/

PS: I ask this because I don’t have particularly good experiences installing kernels and I do run, in my 32bits laptop, a older antiX version

P.

• This reply was modified 4 months, 3 weeks ago by PPC.

[Xunzi_23Member]

Hi PPC, in your situation I would run the command to mitigate the vunerability.

Getting systems setup with new kernels is challenging at times, especially for
new users.

But the antiX Live Kernel Update tool works fine despite some of the text being
confusing for some.

On an installed setup I just used apt.

[Author]

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