linux-kernel - Re: CVE-2022-50495: x86/xen: Fix memory leak in xen_smp_intr_init{

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Message-ID: <87195904-6285-49d2-b311-b3c52526e682@suse.com>
Date: Sat, 4 Oct 2025 19:30:35 +0200
From: Juergen Gross <jgross@...e.com>
To: cve@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: CVE-2022-50495: x86/xen: Fix memory leak in
 xen_smp_intr_init{_pv}()

On 04.10.25 17:51, Greg Kroah-Hartman wrote:
> From: Greg Kroah-Hartman <gregkh@...nel.org>
> 
> Description
> ===========
> 
> In the Linux kernel, the following vulnerability has been resolved:
> 
> x86/xen: Fix memory leak in xen_smp_intr_init{_pv}()
> 
> These local variables @{resched|pmu|callfunc...}_name saves the new
> string allocated by kasprintf(), and when bind_{v}ipi_to_irqhandler()
> fails, it goes to the @fail tag, and calls xen_smp_intr_free{_pv}() to
> free resource, however the new string is not saved, which cause a memory
> leak issue. fix it.
> 
> The Linux kernel CVE team has assigned CVE-2022-50495 to this issue.

Please revoke the CVE. This issue can't be triggered by an unprivileged user.


Juergen

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