Package        : libav
Version        : 6:11.12-1~deb8u3
CVE ID         : CVE-2015-6822 CVE-2015-6823 CVE-2015-6824


Two more security issues have been corrected in the libav multimedia library. This is a follow-up announcement for DLA-1611-1.

CVE-2015-6823

    The allocate_buffers function in libavcodec/alac.c did not initialize
    certain context data, which allowed remote attackers to cause a
    denial of service (segmentation violation) or possibly have
    unspecified other impact via crafted Apple Lossless Audio Codec
    (ALAC) data. This issues has now been addressed by clearing pointers
    in avcodec/alac.c's allocate_buffers().

    Other than stated in debian/changelog of upload 6:11.12-1~deb8u2,
    this issue only now got fixed with upload of 6:11.12-1~deb8u3.

CVE-2015-6824

    The sws_init_context function in libswscale/utils.c did not
    initialize certain pixbuf data structures, which allowed remote
    attackers to cause a denial of service (segmentation violation) or
    possibly have unspecified other impact via crafted video data. In
    swscale/utils.c now these pix buffers get cleared which fixes use of
    uninitialized memory.

    Other than stated in debian/changelog of upload 6:11.12-1~deb8u2,
    this issue only now got fixed with upload of 6:11.12-1~deb8u3.

For Debian 8 "Jessie", these problems have been fixed in version
6:11.12-1~deb8u3.

We recommend that you upgrade your libav packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

-- 

mike gabriel aka sunweaver (Debian Developer)
fon: +49 (1520) 1976 148

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mail: sunweaver@debian.org, https://sunweavers.net/