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Re: [PATCH v2 2/4] cdc-acm: fix possible invalid access when processing notification

From Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Newsgroups linux.kernel
Subject Re: [PATCH v2 2/4] cdc-acm: fix possible invalid access when processing notification
Date 2017-03-19 11:00 +0100
Message-ID <tmFN0-3Je-1@gated-at.bofh.it> (permalink)
References <tl15f-5mY-9@gated-at.bofh.it> <tmrK1-27E-3@gated-at.bofh.it> <tmrK2-27E-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 3/18/2017 9:52 PM, Tobias Herzog wrote:

> Notifications may only be 8 bytes so long. Accessing the 9th and

    s/so//.
    "So long and thanks for all the fish!" :-)

> 10th byte of unimplemented/unknown notifications may be insecure.
> Also check the length of known notifications before accessing anything
> behind the 8th byte.
>
> Signed-off-by: Tobias Herzog <t-herzog@gmx.de>
[...]

MBR, Sergei

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Thread

[PATCH v2 0/4] cdc-acm: reassemble fragmented notifications Tobias Herzog <t-herzog@gmx.de> - 2017-03-18 20:00 +0100
  [PATCH v2 4/4] cdc-acm: remove unused element of struct acm Tobias Herzog <t-herzog@gmx.de> - 2017-03-18 20:00 +0100
  [PATCH v2 2/4] cdc-acm: fix possible invalid access when processing notification Tobias Herzog <t-herzog@gmx.de> - 2017-03-18 20:00 +0100
    Re: [PATCH v2 2/4] cdc-acm: fix possible invalid access when  processing notification Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2017-03-19 11:00 +0100
    Re: [PATCH v2 2/4] cdc-acm: fix possible invalid access when  processing notification Oliver Neukum <oneukum@suse.com> - 2017-03-20 16:10 +0100
  [PATCH v2 1/4] cdc-acm: reassemble fragmented notifications Tobias Herzog <t-herzog@gmx.de> - 2017-03-18 20:10 +0100
    Re: [PATCH v2 1/4] cdc-acm: reassemble fragmented notifications Oliver Neukum <oneukum@suse.com> - 2017-03-20 16:10 +0100
      Re: [PATCH v2 1/4] cdc-acm: reassemble fragmented notifications Tobias Herzog <t-herzog@gmx.de> - 2017-03-24 23:00 +0100

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