GLSA 201101-03: libvpx: User-assisted execution of arbitrary code

Title:libvpx: User-assisted execution of arbitrary code
Bugs: #345559


Timothy B. Terriberry discovered that libvpx contains an integer overflow vulnerability in the processing of video streams that may allow user-assisted execution of arbitrary code.


libvpx is the VP8 codec SDK used to encode and decode video streams, typically within a WebM format media file.

Affected packages

Package Vulnerable Unaffected Architecture(s)
media-libs/libvpx < 0.9.5 >= 0.9.5 All supported architectures


libvpx is vulnerable to an integer overflow vulnerability when processing crafted VP8 video streams.


A remote attacker could entice a user to open a specially crafted media file, possibly resulting in the execution of arbitrary code with the privileges of the user running the application, or a Denial of Service.


There is no known workaround at this time.


All libvpx users should upgrade to the latest stable version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=media-libs/libvpx-0.9.5"

Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying some of these packages.



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