Vulnerability DatabaseCVE-2026-110599
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CVE-2026-110599
Published:October 14, 2026
Updated:October 16, 2026
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.
Related Resources (9)
https://nvd.nist.gov/vuln/detail/CVE-2026-110599
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110599.json
https://github.com/l-smash/l-smash/blob/v2.14.5/importer/nalu_imp.c#L1356-L1378
https://github.com/l-smash/l-smash
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/l-smash-hevc-importer-double-free
https://github.com/l-smash/l-smash/blob/v2.14.5/importer/nalu_imp.c#L697-L715
https://github.com
https://hackmd.io/@haind-pwn/cve-2016-20099-2026-110599-l-smash-hevc-importer-double-free
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CVSS v4
Base Score:
6.9
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.1
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Double Free
CWE-415
EPSS
Base Score:
0.24