High severity7.5NVD Advisory· Published Nov 13, 2017· Updated May 13, 2026

CVE-2017-16803

Description

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.

Affected products

Libav/Libav3 versions
cpe:2.3:a:libav:libav:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:libav:libav:*:*:*:*:*:*:*:*range: <=11.11
- cpe:2.3:a:libav:libav:12.0:*:*:*:*:*:*:*
- cpe:2.3:a:libav:libav:12.1:*:*:*:*:*:*:*

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.securityfocus.com/bid/101882nvdThird Party AdvisoryVDB Entry
bugzilla.libav.org/show_bug.cginvdIssue Tracking
github.com/libav/libav/commit/cd4663dc80323ba64989d0c103d51ad3ee0e9c2fnvdIssue Tracking
security.gentoo.org/glsa/201811-19nvd
www.debian.org/security/2018/dsa-4119nvd

News mentions

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cvss	0.488
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000