CVE-2021-42257
HIGH
7.1
CVSS Score
Published: October 11, 2021 at 12:00 AM UTC
Updated: June 17, 2026 at 04:09 AM UTC
1 product affected across 1 vendorCheck Smart
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Severity
HIGH7.1
Exploit prediction
EPSS 0.4%
Description
check_smart before 6.9.1 allows unintended drive access by an unprivileged user because it only checks for a substring match of a device path (the /dev/bus substring and a number), aka an unanchored regular expression.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 6.9.1
Affected range stops below 6.9.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (5)
Mailing ListExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/10/14/2ExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.suse.com/show_bug.cgi?id=1183057Third Party Advisory
Source: [email protected]
https://www.claudiokuenzler.com/monitoring-plugins/check_smart.phpCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20
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