CVE Explorer
CVE-2026-42495
[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 extensi
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"defaultStatus":"unknown","product":"Xen","vendor":"Xen","versions":[{"status":"unknown","version":"consult Xen advisory XSA-497"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:35e1a31aef221c7d6e34b79d99c9c371e818dde09bb507562ec423515eaf7922 · sha256:a9ea3153bdd8e6fd… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:35e1a31aef221c7d6e34b79d99c9c371e818dde09bb507562ec423515eaf7922 · sha256:a9ea3153bdd8e6fd… · /containers/adp/0/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-191","description":"CWE-191 Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:35e1a31aef221c7d6e34b79d99c9c371e818dde09bb507562ec423515eaf7922 · sha256:a9ea3153bdd8e6fd… · /containers/adp/0/problemTypes/0/descriptions/0
Source references
1 source assertion{"url":"https://xenbits.xenproject.org/xsa/advisory-497.html"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:35e1a31aef221c7d6e34b79d99c9c371e818dde09bb507562ec423515eaf7922 · sha256:a9ea3153bdd8e6fd… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.