CVE-2020-25220
HIGH
7.8
CVSS Score
Published: September 10, 2020 at 01:20 AM UTC
Updated: June 17, 2026 at 03:06 AM UTC
1 product affected across 1 vendorLinux Kernel
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Severity
HIGH7.8
Exploit prediction
EPSS 0.4%
Description
The Linux kernel 4.9.x before 4.9.233, 4.14.x before 4.14.194, and 4.19.x before 4.19.140 has a use-after-free because skcd->no_refcnt was not considered during a backport of a CVE-2020-14356 patch. This is related to the cgroups feature.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
4.14 ≤ v < 4.14.1944.19 ≤ v < 4.19.1404.9.0 ≤ v < 4.9.233
Affected range stops below 4.14.194, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.140, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.9.233, 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
- https://bugzilla.redhat.com/show_bug.cgi?id=1868453
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26e
References (9)
x_refsource_MISCIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=1868453x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140x_refsource_MISCRelease NotesVendor Advisory
Source: [email protected]
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233x_refsource_MISCIssue TrackingPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26eMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlx_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20201001-0004/CVSS
- 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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