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Groups > alt.os.linux.mint > #47307 > unrolled thread

'Copy fail' bug

Started byAxel <none@not.here>
First post2026-05-02 12:24 +1000
Last post2026-05-02 08:16 -0400
Articles 6 — 4 participants

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Contents

  'Copy fail' bug Axel <none@not.here> - 2026-05-02 12:24 +1000
    Re: 'Copy fail' bug rbowman <bowman@montana.com> - 2026-05-02 03:39 +0000
      Re: 'Copy fail' bug Axel <none@not.here> - 2026-05-02 14:12 +1000
    Re: 'Copy fail' bug Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-02 04:21 +0000
      Re: 'Copy fail' bug Axel <none@not.here> - 2026-05-02 14:26 +1000
    Re: 'Copy fail' bug "Alan K." <alan@invalid.com> - 2026-05-02 08:16 -0400

#47307 — 'Copy fail' bug

FromAxel <none@not.here>
Date2026-05-02 12:24 +1000
Subject'Copy fail' bug
Message-ID<n5l5igFi065U1@mid.individual.net>
https://www.itnews.com.au/news/copy-fail-linux-privesc-bug-lay-dormant-in-kernel-since-2017-625492

https://cert.europa.eu/publications/security-advisories/2026-005/

https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available


does this mean Linux has a virus and our computers are compromised and 
our data is at risk? (my knowledge of Linux/LM is very basic)

-- 
Linux Mint 22.3

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#47308

Fromrbowman <bowman@montana.com>
Date2026-05-02 03:39 +0000
Message-ID<n5l9v0Fin1cU1@mid.individual.net>
In reply to#47307
On Sat, 2 May 2026 12:24:16 +1000, Axel wrote:

> https://www.itnews.com.au/news/copy-fail-linux-privesc-bug-lay-dormant-
in-kernel-since-2017-625492
> 
> https://cert.europa.eu/publications/security-advisories/2026-005/
> 
> https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available
> 
> 
> does this mean Linux has a virus and our computers are compromised and
> our data is at risk? (my knowledge of Linux/LM is very basic)

If you have updated your system the problem is already fixed for most 
distros. Even if you have not in most cases for home users the exploit 
requires physical presence. 

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#47309

FromAxel <none@not.here>
Date2026-05-02 14:12 +1000
Message-ID<n5lbu8Fitu7U1@mid.individual.net>
In reply to#47308
rbowman wrote:
> On Sat, 2 May 2026 12:24:16 +1000, Axel wrote:
>
>> https://www.itnews.com.au/news/copy-fail-linux-privesc-bug-lay-dormant-
> in-kernel-since-2017-625492
>> https://cert.europa.eu/publications/security-advisories/2026-005/
>>
>> https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available
>>
>>
>> does this mean Linux has a virus and our computers are compromised and
>> our data is at risk? (my knowledge of Linux/LM is very basic)
> If you have updated your system the problem is already fixed for most
> distros. Even if you have not in most cases for home users the exploit
> requires physical presence.

I do all the updates the update manager shows. I'm using Linux Mint 22.3 
(home user only), so it seems I am ok then.

-- 
Linux Mint 22.3

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#47310

FromLawrence D’Oliveiro <ldo@nz.invalid>
Date2026-05-02 04:21 +0000
Message-ID<10t3u4s$1t9cu$2@dont-email.me>
In reply to#47307
On Sat, 2 May 2026 12:24:16 +1000, Axel wrote:

> does this mean Linux has a virus and our computers are compromised
> and our data is at risk? (my knowledge of Linux/LM is very basic)

The vulnerability just means that anybody who has nonprivileged user
access to execute arbitrary (nonprivileged) commands on your machine
can promote themselves to privileged access.

Do you have multiple users on your machine? Typically, the answer
would be “no” -- I imagine it’s just you.

Even public-facing servers would normally run very restricted apps
when offering services to all and sundry.

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#47311

FromAxel <none@not.here>
Date2026-05-02 14:26 +1000
Message-ID<n5lco3Fitu7U2@mid.individual.net>
In reply to#47310
Lawrence D’Oliveiro wrote:
> On Sat, 2 May 2026 12:24:16 +1000, Axel wrote:
>
>> does this mean Linux has a virus and our computers are compromised
>> and our data is at risk? (my knowledge of Linux/LM is very basic)
> The vulnerability just means that anybody who has nonprivileged user
> access to execute arbitrary (nonprivileged) commands on your machine
> can promote themselves to privileged access.
>
> Do you have multiple users on your machine? Typically, the answer
> would be “no” -- I imagine it’s just you.

yes, just myself

>
> Even public-facing servers would normally run very restricted apps
> when offering services to all and sundry.


-- 
Linux Mint 22.3

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#47313

From"Alan K." <alan@invalid.com>
Date2026-05-02 08:16 -0400
Message-ID<10t4puc$24eol$1@dont-email.me>
In reply to#47307
On 5/1/26 10:24 PM, Axel wrote:
> 
> https://www.itnews.com.au/news/copy-fail-linux-privesc-bug-lay-dormant-in-kernel-since-2017-625492
> 
> https://cert.europa.eu/publications/security-advisories/2026-005/
> 
> https://ubuntu.com/blog/copy-fail-vulnerability-fixes-available
> 
> 
> does this mean Linux has a virus and our computers are compromised and
> our data is at risk? (my knowledge of Linux/LM is very basic)
> 
Seems to me the takeaway from the last article is to run this command:

grep -qE '^algif_aead ' /proc/modules && echo "Affected module is loaded" || echo 
"Affected module is NOT loaded"

A one liner.   In my 22.3 it shows NOT loaded.

-- 
Mint 22.3,  Thunderbird 140.10.0esr,  Firefox 150.0.1
     Alan K.

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