[Bug 2052014] New: blender: Out-of-bounds memory access in IMB_flipy() due to large image dimensions [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2052014

            Bug ID: 2052014
           Summary: blender: Out-of-bounds memory access in IMB_flipy()
                    due to large image dimensions [fedora-all]
           Product: Fedora
           Version: 35
            Status: NEW
         Component: blender
          Keywords: Security, SecurityTracking
          Severity: high
          Priority: high
          Assignee: luya_tfz(a)thefinalzone.net
          Reporter: mcascell(a)redhat.com
        QA Contact: extras-qa(a)fedoraproject.org
                CC: design-devel(a)lists.fedoraproject.org,
                    kwizart(a)gmail.com, luya_tfz(a)thefinalzone.net,
                    negativo17(a)gmail.com, promac(a)gmail.com
  Target Milestone: ---
    Classification: Fedora




This is an automatically created tracking bug!  It was created to ensure
that one or more security vulnerabilities are fixed in affected versions
of fedora-all.

For comments that are specific to the vulnerability please use bugs filed
against the "Security Response" product referenced in the "Blocks"
field.

For more information see:
http://fedoraproject.org/wiki/Security/TrackingBugs

When submitting as an update, use the fedpkg template provided in the next
comment(s).  This will include the bug IDs of this tracking bug as well as
the relevant top-level CVE bugs.

Please also mention the CVE IDs being fixed in the RPM changelog and the
fedpkg commit message.

NOTE: this issue affects multiple supported versions of Fedora. While only
one tracking bug has been filed, please correct all affected versions at
the same time.  If you need to fix the versions independent of each other,
you may clone this bug as appropriate.


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[Bug 2052014] blender: Out-of-bounds memory access in IMB_flipy() due to large image dimensions [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2052014



--- Comment #1 from Mauro Matteo Cascella <mcascell(a)redhat.com&gt; ---
Use the following template to for the 'fedpkg update' request to submit an
update for this issue as it contains the top-level parent bug(s) as well as
this tracking bug.  This will ensure that all associated bugs get updated
when new packages are pushed to stable.

=====

# bugfix, security, enhancement, newpackage (required)
type=security

# low, medium, high, urgent (required)
severity=high

# testing, stable
request=testing

# Bug numbers: 1234,9876
bugs=2052012,2052014

# Description of your update
notes=Security fix for [PUT CVEs HERE]

# Enable request automation based on the stable/unstable karma thresholds
autokarma=True
stable_karma=3
unstable_karma=-3

# Automatically close bugs when this marked as stable
close_bugs=True

# Suggest that users restart after update
suggest_reboot=False

======

Additionally, you may opt to use the bodhi web interface to submit updates:

https://bodhi.fedoraproject.org/updates/new


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[Bug 2052014] blender: Out-of-bounds memory access in IMB_flipy() due to large image dimensions [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2052014

Mauro Matteo Cascella <mcascell(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |2052012





Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=2052012
[Bug 2052012] blender: Out-of-bounds memory access in IMB_flipy() due to large
image dimensions
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[Bug 2052014] CVE-2022-0545 blender: Out-of-bounds memory access in IMB_flipy() due to large image dimensions [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2052014

Guilherme de Almeida Suckevicz <gsuckevi(a)redhat.com&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|blender: Out-of-bounds      |CVE-2022-0545 blender:
                   |memory access in            |Out-of-bounds memory access
                   |IMB_flipy() due to large    |in IMB_flipy() due to large
                   |image dimensions            |image dimensions
                   |[fedora-all]                |[fedora-all]




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[Bug 2052014] CVE-2022-0545 blender: Out-of-bounds memory access in IMB_flipy() due to large image dimensions [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2052014

Ben Beasley <code(a)musicinmybrain.net&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |code(a)musicinmybrain.net



--- Comment #2 from Ben Beasley <code(a)musicinmybrain.net&gt; ---
https://nvd.nist.gov/vuln/detail/CVE-2022-0546
https://developer.blender.org/T94572

Based on upstream git, the fix is included in 3.1.0 and later releases (F35,
F36, F37), but NOT in 2.93.8 final (F34).

>  commit 77616082f44da5258faf9ec0d53618c721b88c62
>  Author: Jesse Yurkovich <jesse.y(a)gmail.com&gt;
>  Date:   Tue Jan 11 20:48:32 2022 -0800
>  
>      Fix T89542: Crash when loading certain .hdr files
>      
>      The direct cause of the bug in question was passing in the raw memory
>      buffer to sscanf. It should be called with a null-terminated buffer;
>      which isn't guaranteed when blindly trusting the file data.
>      
>      When attempting to fuzz this code path, a variety of other crashes were
>      discovered and fixed.
>      
>      Differential Revision: https://developer.blender.org/D11952 
I have therefore set the Version to 34, since that appears to be the only
affected current Fedora release.


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[Bug 2052014] CVE-2022-0545 blender: Out-of-bounds memory access in IMB_flipy() due to large image dimensions [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2052014

Ben Beasley <code(a)musicinmybrain.net&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|35                          |34




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[Bug 2052014] CVE-2022-0545 blender: Out-of-bounds memory access in IMB_flipy() due to large image dimensions [fedora-all]

https://bugzilla.redhat.com/show_bug.cgi?id=2052014

Ben Beasley <code(a)musicinmybrain.net&gt; changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |CURRENTRELEASE
            Version|34                          |35
             Status|NEW                         |CLOSED
        Last Closed|                            |2022-04-08 16:06:50



--- Comment #3 from Ben Beasley <code(a)musicinmybrain.net&gt; ---
Sorry, I mixed this up with bug 2052010 for CVE-2022-0546. Corrected analysis
is below.

https://nvd.nist.gov/vuln/detail/CVE-2022-0545
https://developer.blender.org/T94629

Based on upstream git, the fix is included in 3.1.0 and later releases (F35,
F36, F37), and in 2.93.8 final (F34), so it appears that this is already
resolved in current Fedora releases.

>  commit e07f16776bca5e9494e6b143170f31d5eeb160ce
>  Author: Jesse Yurkovich <jesse.y(a)gmail.com&gt;
>  Date:   Thu Jan 6 21:35:04 2022 -0800
>  
>      Fix T94629: The IMB_flip API would fail with large images
>      
>      Fix IMB_flip[xy] to handle cases where integer overflow might occur when
>      given sufficiently large image dimensions.
>      
>      All of these fixes were of a similar class where the intermediate
>      sub-expression would overflow silently. Widen the types as necessary.
>      
>      Differential Revision: https://developer.blender.org/D13744 

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