buffer overruns in libfsimage iso9660 handling
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
[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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Xen Xen
Version range not reported