CVE-2026-62425: buffer overruns in libfsimage iso9660 handling
[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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62425?
The severity of CVE-2026-62425 is rated at 57 on the risk scale.
What is the main issue with CVE-2026-62425?
CVE-2026-62425 is due to buffer overruns in the libfsimage iso9660 handling, which can lead to potential exploitation.
How do I fix CVE-2026-62425?
To fix CVE-2026-62425, update the libfsimage iso9660 driver to a patched version that includes proper input validation.
Who is affected by CVE-2026-62425?
Users of the libfsimage iso9660 driver that handle ISO images are at risk from CVE-2026-62425.
What kind of attacks could CVE-2026-62425 facilitate?
CVE-2026-62425 could facilitate attacks that result in buffer overrun vulnerabilities, potentially allowing code execution.