CVE-2026-42494

Published: Lug 28, 2026 Last Modified: Lug 28, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,1
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Attack Vector: local
Attack Complexity: low
Privileges Required: none
User Interaction: required
Scope: unchanged
Confidentiality: low
Integrity: none
Availability: high

Description

AI Translation Available

[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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0012
Percentile
0,0th
Updated

Single Data Point

Only one EPSS measurement is available for this CVE. Trend analysis requires multiple data points over time.

125

Out-of-bounds Read

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Availability Other
Potential Impacts:
Read Memory Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Varies By Context
Applicable Platforms
Languages: Memory-Unsafe, C, C++
Technologies: ICS/OT
View CWE Details
https://xenbits.xenproject.org/xsa/advisory-497.html
https://xenbits.xenproject.org/xsa/advisory-497.html