CVE-2026-62423 in libfsimage
Zusammenfassung
von MITRE • 28.07.2026
[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.
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