PT-2026-65466 · Xen · Xen

Syed Abdul · CVE-2026-62424 · Published 2026-07-28 · Updated 2026-07-28

NVD

CVSS v3.1

5.5

Medium

Base vector

AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

[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.

Fix

Weakness Enumeration

CWE-130

Related Identifiers

CVE-2026-62424

Affected Products

Xen

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-62424 · Security Note
• https://xenbits.xenproject.org/xsa/advisory-497.html · Note