CVE-2020-25643

HIGH EPSS 86.8%
Published Oct 6, 20205y ago · Modified Jun 17, 20262w ago
7.2 CVSS 3.1
High
Find Similar
Published Oct 6, 2020 5y ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.2
Exploitability
1.2
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
86.8% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-20 Improper Input Validation Validation

Affected Products 26

VendorProductVersionRange
linuxlinux_kernel*≥2.6.29  –  <4.4.238
linuxlinux_kernel*≥4.5  –  <4.9.238
linuxlinux_kernel*≥4.10  –  <4.14.200
linuxlinux_kernel*≥4.15  –  <4.19.148
linuxlinux_kernel*≥4.20  –  <5.4.68
linuxlinux_kernel*≥5.5  –  <5.8.12
linuxlinux_kernel5.9.0any
linuxlinux_kernel5.9.0any
linuxlinux_kernel5.9.0any
linuxlinux_kernel5.9.0any
linuxlinux_kernel5.9.0any
linuxlinux_kernel5.9.0any
redhatenterprise_linux7.0any
redhatenterprise_linux8.0any
opensuseleap15.1any
debiandebian_linux9.0any
debiandebian_linux10.0any
opensuseleap15.2any
netapph410c_firmware*any
netapph410c*any
starwindsoftwarestarwind_virtual_sanv8any
starwindsoftwarestarwind_virtual_sanv8any
starwindsoftwarestarwind_virtual_sanv8any
starwindsoftwarestarwind_virtual_sanv8any
starwindsoftwarestarwind_virtual_sanv8any
starwindsoftwarestarwind_virtual_sanv8any

References 10

  • lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html
    Third Party Advisory
  • lists.opensuse.org http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00042.html
    Mailing ListThird Party Advisory
  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1879981
    Issue TrackingPatchThird Party Advisory
  • git.kernel.org https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66d42ed8b25b64eb63111a2b8582c5afc8bf1105
    Mailing ListPatchThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2020/10/msg00028.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
    Mailing ListThird Party Advisory
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
    Mailing ListThird Party Advisory
  • security.netapp.com https://security.netapp.com/advisory/ntap-20201103-0002/
    Third Party Advisory
  • debian.org https://www.debian.org/security/2020/dsa-4774
    Third Party Advisory
  • starwindsoftware.com https://www.starwindsoftware.com/security/sw-20210325-0002/
    Third Party Advisory

Remediation

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1879981
    Issue TrackingPatchThird Party Advisory
  • git.kernel.org https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=66d42ed8b25b64eb63111a2b8582c5afc8bf1105
    Mailing ListPatchThird Party Advisory