linux-kernel - Re: CVE-2023-52823: kernel: kexec: copy user-array safely

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Date: Fri, 24 May 2024 16:13:53 +0200
From: Jiri Bohac <jbohac@...e.cz>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: cve@...nel.org, linux-kernel@...r.kernel.org,
	linux-cve-announce@...r.kernel.org,
	Eric Biederman <ebiederm@...ssion.com>, kexec@...ts.infradead.org
Subject: Re: CVE-2023-52823: kernel: kexec: copy user-array safely

On Fri, May 24, 2024 at 02:38:04PM +0200, Jiri Bohac wrote:
> On Fri, May 24, 2024 at 12:15:47PM +0200, Greg Kroah-Hartman wrote:
> > Nice, but then why was this commit worded this way?  Now we check twice?
> > Double safe?  Should it be reverted?
> 
> double safe's good; turning it into a CVE not so much :(
> CVE-2023-52822, CVE-2023-52824 and CVE-2023-52820, originally from the same patch
> series, seem to be the exact same case.

Same thing: CVE-2023-52758


-- 
Jiri Bohac <jbohac@...e.cz>
SUSE Labs, Prague, Czechia