CVE-2026-110599
7.1HighPublished 14 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Impact
- High impact on integrity, availability
- Weakness
- CWE-415
Impact
Attackers can crash applications or cause heap corruption and potential code execution by tricking a user or service into processing a crafted media file. They need local file access or the ability to submit input to tools consuming L-SMASH.
Root cause
Error handling in importer/nalu_imp.c improperly frees borrowed codec-specific objects when processing streams that lack a parseable SPS, triggering a double free.
Affected systems
L-SMASH through 2.14.5
CVSS v3.1 · CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Fix & remediation
No fixed release is documented; avoid processing untrusted media files with L-SMASH, boxdumper, muxer, or remuxer until an upstream patch is available.
AI-suggested. Run it in staging first and check it against the vendor advisory. Why?
NVD description
L-SMASH through 2.14.5 contains a double free vulnerability in hevc_setup_first_summary() and h264_setup_first_summary() in importer/nalu_imp.c that frees borrowed codec-specific objects on error paths. Attackers can supply a crafted Annex-B elementary stream lacking a parseable SPS to lsmash_read_file() or the boxdumper, remuxer, or muxer tools, causing use-after-free, heap corruption, and crashes.
References
- https://github.com/l-smash/l-smash/blob/v2.14.5/importer/nalu_imp.c#L1356-L1378
- https://github.com/l-smash/l-smash/blob/v2.14.5/importer/nalu_imp.c#L697-L715
- https://hackmd.io/@haind-pwn/l-smash-hevc-importer-double-free
- https://www.vulncheck.com/advisories/l-smash-through-2.14.5-double-free-in-hevc-and-h-264-importer-probe
- https://hackmd.io/@haind-pwn/cve-2016-20099-2026-110599-l-smash-hevc-importer-double-free