ELA-755-1 libde265 security update

multiple vulnerabilities

2022-12-16
Packagelibde265
Version1.0.2-2+deb9u1 (stretch)
Related CVEs CVE-2020-21599 CVE-2021-35452 CVE-2021-36409 CVE-2021-36410 CVE-2021-36411


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

CVE-2020-21599

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.

CVE-2021-35452

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

CVE-2021-36409

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.

CVE-2021-36410

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

CVE-2021-36411

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 9 stretch, these problems have been fixed in version 1.0.2-2+deb9u1.

We recommend that you upgrade your libde265 packages.

Further information about Extended LTS security advisories can be found in the dedicated section of our website.