Bug 1926787 (CVE-2021-20240) - CVE-2021-20240 gdk-pixbuf: integer wraparound in the GIF loader of gdk-pixbuf via crafted input leads to segmentation fault
Summary: CVE-2021-20240 gdk-pixbuf: integer wraparound in the GIF loader of gdk-pixbuf...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-20240
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1926789 1926790 1928821
Blocks: 1926792
TreeView+ depends on / blocked
 
Reported: 2021-02-09 13:09 UTC by Marian Rehak
Modified: 2022-04-18 02:28 UTC (History)
11 users (show)

Fixed In Version: gdk-pixbuf 2.42.0
Clone Of:
Environment:
Last Closed: 2022-04-18 02:28:46 UTC
Embargoed:

Attachments (Terms of Use)

Description Marian Rehak 2021-02-09 13:09:33 UTC 
An integer wraparound bug was found in the GIF loader of gdk-pixbuf. Given a crafted input, it will abort with a segmentation fault.

Reference:

https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/issues/132
Comment 1 Marian Rehak 2021-02-09 13:10:03 UTC 
Created gdk-pixbuf2 tracking bugs for this issue:

Affects: fedora-all [bug 1926789]


Created mingw-gdk-pixbuf tracking bugs for this issue:

Affects: fedora-all [bug 1926790]
Comment 2 Riccardo Schirone 2021-02-15 14:57:09 UTC 
Vulnerable code seems to be introduced in https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/commit/4e7b5345d2fc8f0d1dee93d8ba9ab805bc95d42f in upstream version 2.39.2.
Comment 3 Riccardo Schirone 2021-02-15 15:12:04 UTC 
Statement:

This issue did not affect the versions of gdk-pixbuf2 as shipped with Red Hat Enterprise Linux 6, 7, and 8 as they did not include the vulnerable code.
Comment 4 Riccardo Schirone 2021-02-15 15:12:22 UTC 
Upstream fix:
https://gitlab.gnome.org/GNOME/gdk-pixbuf/-/commit/80704d84055d8f33cd66824d78d16b89fc45db45
Comment 10 Product Security DevOps Team 2022-04-18 02:28:43 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-20240
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