CVE-2020-25662

A Red Hat only CVE-2020-12352 regression issue was found in the way the Linux kernel's Bluetooth...

5.3 Medium

A Red Hat only CVE-2020-12352 regression issue was found in the way the Linux kernel's Bluetooth stack implementation handled the initialization of stack memory when handling certain AMP packets. This flaw allows a remote attacker in an adjacent range to leak small portions of stack memory on the system by sending specially crafted AMP packets. The highest threat from this vulnerability is to data confidentiality.

Attack profile

How easy it is to exploit

Attack vector: Adjacent network
Complexity: High
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

1.18%Up 0.1 points since Apr 14, 2021

What each source reports

CVE List Score used 5.3

Record: CVE-2020-25662
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-284, CWE-665
Updated: 2026-11-02

EUVDEUVD-2020-18324 5.3

Record: EUVD-2020-18324
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-03

GitHub AdvisoriesGHSA-6v9p-cxvf-8f7v 6.5

A Red Hat only CVE-2020-12352 regression issue was found in the way the Linux kernel's Bluetooth...

Record: GHSA-6v9p-cxvf-8f7v
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-200, CWE-284, CWE-665
Updated: 2026-11-02

NVD 5.3

Record: CVE-2020-25662
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 3.3 LowAV:A/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-284, CWE-665
Updated: 2026-11-02

OSVRHSA-2020:4685 8.8

Red Hat Security Advisory: kernel security update

Record: RHSA-2020:4685
CVSS 3.1: 8.8 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVRHSA-2020:4686 8.8

Red Hat Security Advisory: kernel-rt security update

Record: RHSA-2020:4686
CVSS 3.1: 8.8 HighCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-25662 6.5

Record: UBUNTU-CVE-2020-25662
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 3.1: 5.3 MediumCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`bpftool` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`bpftool-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-abi-whitelists` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-core` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debug` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debug-core` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debug-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debug-devel` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debug-modules` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3

Show 63 moreShow less

Affected packages
Package	Affected	Fixed
`kernel-debug-modules-extra` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo-common-aarch64` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo-common-ppc64le` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo-common-s390x` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo-common-x86_64` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-devel` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-doc` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-modules` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-modules-extra` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-tools` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-tools-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-tools-libs` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-zfcpdump` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-zfcpdump-core` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-zfcpdump-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-zfcpdump-devel` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-zfcpdump-modules` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-zfcpdump-modules-extra` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`perf` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`perf-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`python3-perf` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`python3-perf-debuginfo` Red Hat:enterprise_linux:8::baseos From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`bpftool-debuginfo` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debug-debuginfo` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo-common-aarch64` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo-common-ppc64le` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-debuginfo-common-x86_64` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-tools-debuginfo` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-tools-libs-devel` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`perf-debuginfo` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`python3-perf-debuginfo` Red Hat:enterprise_linux:8::crb From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.el8_3	0:4.18.0-240.1.1.el8_3
`kernel-rt` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-core` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-core` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-debuginfo` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-devel` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-kvm` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-modules` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-modules-extra` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debuginfo` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debuginfo-common-x86_64` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-devel` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-kvm` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-modules` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-modules-extra` Red Hat:enterprise_linux:8::nfv From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-core` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-core` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-debuginfo` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-devel` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-modules` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debug-modules-extra` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debuginfo` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-debuginfo-common-x86_64` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-devel` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-modules` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`kernel-rt-modules-extra` Red Hat:enterprise_linux:8::realtime From an advisory covering 3 CVEs	before 0:4.18.0-240.1.1.rt7.55.el8_3	0:4.18.0-240.1.1.rt7.55.el8_3
`linux-hwe` Ubuntu:18.04:LTS	All versions, plus listed versions 4.18.0-13.14~18.04.14.18.0-14.15~18.04.14.18.0-15.16~18.04.14.18.0-16.17~18.04.14.18.0-17.18~18.04.1 Show 38 moreShow less 4.18.0-18.19~18.04.14.18.0-20.21~18.04.14.18.0-21.22~18.04.14.18.0-22.23~18.04.14.18.0-24.25~18.04.14.18.0-25.26~18.04.15.0.0-23.24~18.04.15.0.0-25.26~18.04.15.0.0-27.28~18.04.15.0.0-29.31~18.04.15.0.0-31.33~18.04.15.0.0-32.34~18.04.25.0.0-35.38~18.04.15.0.0-36.39~18.04.15.0.0-37.40~18.04.15.3.0-26.28~18.04.15.3.0-28.30~18.04.15.3.0-40.32~18.04.15.3.0-42.34~18.04.15.3.0-45.37~18.04.15.3.0-46.38~18.04.15.3.0-51.44~18.04.25.3.0-53.47~18.04.15.3.0-59.53~18.04.15.3.0-61.55~18.04.15.3.0-62.56~18.04.15.3.0-64.58~18.04.15.3.0-65.595.3.0-66.605.3.0-67.615.3.0-68.635.3.0-69.655.3.0-70.665.3.0-72.685.3.0-73.695.3.0-74.705.3.0-75.715.3.0-76.72	None known
`linux-raspi2` Ubuntu:20.04:LTS	All versions, plus listed versions 5.3.0-1007.85.3.0-1014.165.3.0-1015.175.3.0-1017.195.4.0-1004.45.4.0-1006.6	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-25662 is a medium vulnerability (CVSS 5.3) in Linux Kernel, published November 5, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.18%, the 67th percentile. No source names a fixed version.

References

Show 20 moreShow less