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CVE-2020-25643
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by…
High7.2EPSS 3.3%
- Published
- Updated
- Reserved
- Assigned by
- redhat
Description
A flaw was found in the HDLC_PPP module of the Linux kernel in versions before 5.9-rc7. Memory corruption and a read overflow is caused by improper input validation in the ppp_cp_parse_cr function which can cause the system to crash or cause a denial of service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.3% · top 11% 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: High 7.2.
Weakness
Affected products
kernel
- affected Linux kernel versions before 5.9-rc7
References (10)
- https://bugzilla.redhat.com/show_bug.cgi?id=1879981 (opens in a new tab)x_transferred
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66d42ed8b25b64eb63111a2b8582c5afc8bf1105 (opens in a new tab)x_transferred
- openSUSE-SU-2020:1655 (opens in a new tab)vendor-advisoryx_transferred
- openSUSE-SU-2020:1698 (opens in a new tab)vendor-advisoryx_transferred
- DSA-4774 (opens in a new tab)vendor-advisoryx_transferred
- [debian-lts-announce] 20201028 [SECURITY] [DLA 2417-1] linux-4.19 security update (opens in a new tab)mailing-listx_transferred
- [debian-lts-announce] 20201030 [SECURITY] [DLA 2420-1] linux security update (opens in a new tab)mailing-listx_transferred
- [debian-lts-announce] 20201031 [SECURITY] [DLA 2420-2] linux regression update (opens in a new tab)mailing-listx_transferred
- https://security.netapp.com/advisory/ntap-20201103-0002/ (opens in a new tab)x_transferred
- https://www.starwindsoftware.com/security/sw-20210325-0002/ (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-2020-25643)Record last updated .