VulnerabilityModified
CVE-2020-25220
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.
HIGH 7.8EPSS 0.45%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.45%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.45% probability · 38th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1868453Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194Release Notes, Vendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140Release Notes, Vendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26eIssue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20201001-0004/Third Party Advisory
- https://www.spinics.net/lists/stable/msg405099.htmlMailing List, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1868453Issue Tracking, Patch, Third Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.194Release Notes, Vendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.19.140Release Notes, Vendor Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.233Release Notes, Vendor Advisory
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-4.14.y&id=82fd2138a5ffd7e0d4320cdb669e115ee976a26eIssue Tracking, Patch, Vendor Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00032.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/10/msg00034.htmlMailing List, Third Party Advisory
- https://security.netapp.com/advisory/ntap-20201001-0004/Third Party Advisory
- https://www.spinics.net/lists/stable/msg405099.htmlMailing List, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.