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[SECURITY] [DLA 3240-1] libde265 security update

Debian LTS Advisory DLA-3240-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                         Tobias Frost
December 15, 2022                             https://wiki.debian.org/LTS

Package        : libde265
Version        : 1.0.3-1+deb10u1
CVE ID         : CVE-2020-21599 CVE-2021-35452 CVE-2021-36408 CVE-2021-36409
                 CVE-2021-36410 CVE-2021-36411
Debian Bug     : 1014977

Multiple issues were found in libde265, an open source implementation of the
h.265 video codec, which may result in denial of or have unspecified other


    libde265 v1.0.4 contains a heap buffer overflow in the
    de265_image::available_zscan function, which can be exploited via a crafted
    a file.


    An Incorrect Access Control vulnerability exists in libde265 v1.0.8 due to
    a SEGV in slice.cc.


    libde265 v1.0.8 contains a Heap-use-after-free in intrapred.h when decoding
    file using dec265.


    There is an Assertion `scaling_list_pred_matrix_id_delta==1' failed at
    sps.cc:925 in libde265 v1.0.8 when decoding file, which allows attackers to
    cause a Denial of Service (DoS) by running the application with a crafted
    file or possibly have unspecified other impact.


    A stack-buffer-overflow exists in libde265 v1.0.8 via fallback-motion.cc in
    function put_epel_hv_fallback when running program dec265.


    An issue has been found in libde265 v1.0.8 due to incorrect access control.
    A SEGV caused by a READ memory access in function derive_boundaryStrength of
    deblock.cc has occurred. The vulnerability causes a segmentation fault and
    application crash, which leads to remote denial of service.

For Debian 10 buster, these problems have been fixed in version

We recommend that you upgrade your libde265 packages.

For the detailed security status of libde265 please refer to
its security tracker page at:

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

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