linux-kernel - Re: [PATCH 0/2] KVM: Fix out-of-bounds memslot access

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <526247ac-4201-8b3d-0f15-d93b12a530b8@de.ibm.com>
Date:   Wed, 8 Apr 2020 09:24:27 +0200
From:   Christian Borntraeger <borntraeger@...ibm.com>
To:     Sean Christopherson <sean.j.christopherson@...el.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     David Hildenbrand <david@...hat.com>,
        Cornelia Huck <cohuck@...hat.com>, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        syzbot+d889b59b2bb87d4047a2@...kaller.appspotmail.com
Subject: Re: [PATCH 0/2] KVM: Fix out-of-bounds memslot access



On 08.04.20 08:40, Sean Christopherson wrote:
> Two fixes for what are effectively the same bug.  The binary search used
> for memslot lookup doesn't check the resolved index and can access memory
> beyond the end of the memslot array.
> 
> I split the s390 specific change to a separate patch because it's subtly
> different, and to simplify backporting.  The KVM wide fix can be applied
> to stable trees as is, but AFAICT the s390 change would need to be paired
> with the !used_slots check from commit 774a964ef56 ("KVM: Fix out of range

I cannot find the commit id 774a964ef56