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TI-2016-09370 Aliases CVE-2016-20099GHSA-wq77-gg6m-97hh

Infinite loop in L-SMASH VC-1 importer probe allows denial of service

Priority MEDIUM 63CWE-835Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-835.

Summary

L-SMASH through 2.14.5 contains an infinite loop in vc1_importer_probe() in importer/vc1_imp.c, classified as CWE-835. An attacker can supply a file consisting only of zero bytes, which lsmash_read_file() probes automatically, so the application consumes CPU indefinitely and denial of service results.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

L-SMASH through 2.14.5 contains an infinite loop vulnerability in vc1_importer_probe() in importer/vc1_imp.c that allows attackers to hang applications via crafted input files. Attackers can supply a file consisting only of zero bytes, which lsmash_read_file() probes automatically, causing indefinite CPU consumption and denial of service.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00237 14th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
l-smashl-smashup to 2.14.5—No fix listedCNA
  • l-smash Vendorl-smash Affected up to 2.14.5 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for L-SMASH.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-14 Threatist record created from CVE-2016-20099
  2. 2026-10-14 Alias added: GHSA-wq77-gg6m-97hh
  3. 2026-10-15 CISA SSVC decision points changed

References

Patch 1

Advisory 1

Other 1

  • TI-2026-74093 Double free in L-SMASH HEVC and H.264 importer probe CVSS 4.0MEDIUM 6.9
  • TI-2026-83848 Heap out-of-bounds write in L-SMASH via hdlr and url boxes CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences