Skip to content
Fencer Vulns
medium 5.3

CVE-2020-25662 json

A Red Hat only CVE-2020-12352 regression issue was found in the way the Linux kernel's Bluetooth stack implementation handled the initializ…

published 2020-11-05 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-18324

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.2%
EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

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.

Patch / fix

  • kernel RHEL 8 4.18.0-240.1.1.el8_3
  • perf RHEL 8 4.18.0-240.1.1.el8_3
  • bpftool RHEL 8 4.18.0-240.1.1.el8_3
  • kernel-core RHEL 8 4.18.0-240.1.1.el8_3
  • kernel-tools RHEL 8 4.18.0-240.1.1.el8_3
  • python3-perf RHEL 8 4.18.0-240.1.1.el8_3
  • kernel-modules RHEL 8 4.18.0-240.1.1.el8_3
  • kernel-zfcpdump RHEL 8 4.18.0-240.1.1.el8_3

red hat advisories RHSA-2020:4685RHSA-2020:4686

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-25662 updated cvss 5.3

kernel: Red Hat only CVE-2020-12352 regression

  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-240.1.1.el8_3, kernel-debuginfo-common-aarch64 4.18.0-240.1.1.el8_3, kernel-debuginfo-common-ppc64le 4.18.0-240.1.1.el8_3 Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-240.1.1.el8_3, kernel 4.18.0-240.1.1.el8_3, bpftool 4.18.0-240.1.1.el8_3, kernel-core 4.18.0-240.1.1.el8_3, kernel-tools 4.18.0-240.1.1.el8_3, python3-perf 4.18.0-240.1.1.el8_3, +15 more
    fixed: vendor fix RHSA-2020:4685
  • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-core 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-modules 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-debug-core 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-debug-modules 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-modules-extra 4.18.0-240.1.1.rt7.55.el8_3, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-kvm 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-core 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-modules 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-debug-kvm 4.18.0-240.1.1.rt7.55.el8_3, kernel-rt-debug-core 4.18.0-240.1.1.rt7.55.el8_3, +4 more
    fixed: vendor fix RHSA-2020:4686
  • Red Hat Enterprise Linux 5 kernel Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, kernel-alt, python-perf, +9 more Red Hat Enterprise MRG 2 kernel-rt, mrg-rt-release, kernel-rt-trace, kernel-rt-vanilla, kernel-rt-firmware
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.18% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 6.5 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 3.3 AV:A/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Red Hat kernel

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.