[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.]
The directory and Rock Ridge / SUSP walk in libfsimage's iso9660 driver derives several lengths directly from attacker-controlled on-disk fields without validating them:
The directory loop itself assumes a good record length. This is CVE-2026-42494.
The calculation of the System Use area may underflow. This is CVE-2026-42495.
The Rock Ridge extension loop assumes a good (inner) record length. This is CVE-2026-62423.
The Rock Ridge NM record processing assumes a good entry length. This is CVE-2026-62424.
The Rock Ridge CE record processing assumes a good size and offset. This is CVE-2026-62425.
Exploitability
AV:LAC:LPR:NUI:RScope
S:UImpact
C:NI:NA:H5.5/CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H