CVE-2016-20099
L-SMASH through 2.14.5 Infinite Loop in VC-1 Importer Probe
- State
- Published
- Severity
- 6.8 Medium
- Published
- Oct 14, 2026
- Updated
- Oct 14, 2026
- Reserved
- Oct 14, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')
Affected Products
| Product | Versions |
|---|---|
l-smashl-smash |
|
References
- https://github.com/l-smash/l-smash/pull/58patchissue-tracking
- https://github.com/l-smash/l-smash/blob/v2.14.5/importer/vc1_imp.c#L462-L488technical-description
- https://hackmd.io/@haind-pwn/l-smash-hevc-importer-double-freethird-party-advisory
- VulnCheck Advisory: L-SMASH through 2.14.5 Infinite Loop in VC-1 Importer Probethird-party-advisory
- https://hackmd.io/@haind-pwn/cve-2016-20099-2026-110599-l-smash-hevc-importer-double-freeexploit
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