CVE-2020-25656
MEDIUM
4.1
CVSS Score
Published: December 2, 2020 at 12:00 AM UTC
Updated: June 17, 2026 at 03:07 AM UTC
5 products affected across 4 vendorsLinux KernelDebian LinuxEnterprise Linux
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Severity
MEDIUM4.1
Exploit prediction
EPSS 0.4%
Description
A flaw was found in the Linux kernel. A use-after-free was found in the way the console subsystem was using ioctls KDGKBSENT and KDSKBSENT. A local user could use this flaw to get read memory access out of bounds. The highest threat from this vulnerability is to data confidentiality.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v < 5.105.10 rc1
Affected range stops below 5.10, 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 (6)
ExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1888726Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/12/msg00015.htmlMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/12/msg00027.htmlThird Party Advisory
Source: [email protected]
https://www.starwindsoftware.com/security/sw-20210325-0006/CVSS
- Attack Vector
- LOCAL
- Complexity
- HIGH
- Privileges
- HIGH
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- NONE
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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