linux-kernel - Re: CVE-2022-49444: module: fix [e_shstrndx].sh

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Message-ID: <2025031759-pretzel-automated-fc3e@gregkh>
Date: Mon, 17 Mar 2025 14:46:20 +0100
From: Greg KH <gregkh@...uxfoundation.org>
To: Brendan Jackman <jackmanb@...gle.com>
Cc: cve@...nel.org, linux-cve-announce@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: CVE-2022-49444: module: fix [e_shstrndx].sh_size=0 OOB access

On Mon, Mar 17, 2025 at 08:14:16AM +0000, Brendan Jackman wrote:
> > It is trivial to craft a module to trigger OOB access in this line:
> 
> Requires loading a crafted module?  I don't think there's any coherent threat
> model where this is a vuln. Probably a CVE to revoke?

Look at the commit this is marked as fixing.  It was a "feature"
introduced to properly harden elf sections in modules.  So if you are
relying on that new thing, then yes, this is a vulnerability.  If your
system does not, then your system is not vulnerable to this issue.

thanks,

greg k-h