CVE-2020-25669
HIGH
7.8
CVSS Score
Published: May 26, 2021 at 11:25 AM UTC
Updated: June 17, 2026 at 03:07 AM UTC
22 products affected across 4 vendorsLinux KernelDebian LinuxCloud Backup
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Severity
HIGH7.8
Exploit prediction
EPSS 0.6%
Description
A vulnerability was found in the Linux Kernel where the function sunkbd_reinit having been scheduled by sunkbd_interrupt before sunkbd being freed. Though the dangling pointer is set to NULL in sunkbd_disconnect, there is still an alias in sunkbd_reinit causing Use After Free.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%v < 4.4.2454.10 ≤ v < 4.14.2084.15 ≤ v < 4.19.1594.20 ≤ v < 5.4.794.5 ≤ v < 4.9.2455.5 ≤ v < 5.9.10
Affected range stops below 4.14.208, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.159, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.4.245, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.245, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.79, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.9.10, so it looks safe — our inference, not a vendor statement
Cloud Backup· NetAppdrupal
95%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (8)
Mailing Listx_refsource_MLISTExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/11/05/2Mailing Listx_refsource_MLISTExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2020/11/20/5x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/torvalds/linux/commit/77e70d351db7de07a46ac49b87a6c3c7a60fca7eMailing 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.htmlx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20210702-0006/x_refsource_MISC
Source: [email protected]
https://www.openwall.com/lists/oss-security/2020/11/05/2%2Cx_refsource_MISC
Source: [email protected]
https://www.openwall.com/lists/oss-security/2020/11/20/5%2CCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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