CVE-2020-25643

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.

Category

7.2
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.39%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory debian.org
Affected: n/a kernel
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1879981 issue tracking third party advisory patch
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66d42ed8b25b64eb63111a2b8582c5afc8bf1105 mailing list third party advisory patch
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html mailing list third party advisory vendor advisory
https://www.debian.org/security/2020/dsa-4774 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00028.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html third party advisory mailing list
https://security.netapp.com/advisory/ntap-20201103-0002/ third party advisory
https://www.starwindsoftware.com/security/sw-20210325-0002/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-25643?
CVE-2020-25643 has been scored as a high severity vulnerability.
How to fix CVE-2020-25643?
To fix CVE-2020-25643, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-25643 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-25643 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-25643?
CVE-2020-25643 affects n/a kernel.
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