In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.
@maintainer(s), noting 12.1 in tree. In case of bump, please call for stabilization, thank you.
Gentoo Security Padawan
please test and mark stable: =media-video/libav-12.3
Stable on alpha.
arm stable and security cleanup done
This issue was resolved and addressed in
GLSA 201811-19 at https://security.gentoo.org/glsa/201811-19
by GLSA coordinator Aaron Bauman (b-man).