CVE-2026-110599CWE-415

CVE-2026-110599

High · published October 14, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
14.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
CVSS v4.0
6.9 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00243 · 14.6th percentile
Weakness
CWE-415 · Double Free
Published
2026-10-14T19:17Z
References (5)
https://github.com/l-smash/l-smash/blob/v2.14.5/importer/nalu_imp.c#L1356-L1378 · [email protected]https://github.com/l-smash/l-smash/blob/v2.14.5/importer/nalu_imp.c#L697-L715 · [email protected]https://hackmd.io/@haind-pwn/l-smash-hevc-importer-double-free · [email protected]https://www.vulncheck.com/advisories/l-smash-through-2.14.5-double-free-in-hevc-and-h-264-importer-probe · [email protected]https://hackmd.io/@haind-pwn/cve-2016-20099-2026-110599-l-smash-hevc-importer-double-free · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 14:16Z
    L-SMASH through 2.14.5 Double Free in HEVC and H.264 Importer Probe
    cvelistv5
  • 14 OCT 14:16Z
    L-SMASH through 2.14.5 Double Free in HEVC and H.264 Importer Probe
    cvelistv5