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CVE-2020-25656
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…
Medium4.1EPSS 0.44%
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium4.1 | CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N |
- EPSS (exploitation in 30 days)
- 0.44% · top 62% of all CVEs (6 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.1.
Weakness
Affected products
kernel
- affected kernel 5.10-rc2
References (6)
- https://bugzilla.redhat.com/show_bug.cgi?id=1888726 (opens in a new tab)x_transferred
- https://lkml.org/lkml/2020/10/29/528 (opens in a new tab)x_transferred
- https://lkml.org/lkml/2020/10/16/84 (opens in a new tab)x_transferred
- [debian-lts-announce] 20201210 [SECURITY] [DLA 2483-1] linux-4.19 security update (opens in a new tab)mailing-listx_transferred
- [debian-lts-announce] 20201218 [SECURITY] [DLA 2494-1] linux security update (opens in a new tab)mailing-listx_transferred
- https://www.starwindsoftware.com/security/sw-20210325-0006/ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2020-25656)Record last updated .