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Fencer Vulns
high 8.8

CVE-2020-12351 json

Improper input validation in BlueZ may allow an unauthenticated user to potentially enable escalation of privilege via adjacent access.

published 2020-11-23 5 y ago modified 2026-06-17 4 mo ago also EUVD-2020-4663

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.8%
EPSS 7.8% chance of exploitation in 30 days, percentile 94%
public exploits
1
Exploit-DB

Summary

Improper input validation in BlueZ may allow an unauthenticated user to potentially enable escalation of privilege via adjacent access.

Patch / fix

  • linux linux_kernel 4.9.240, 4.14.202, 4.19.152, 5.4.72, 5.8.16
  • linux Debian 14, Debian 13, Debian 12 5.9.1-1

debian advisories DEBIAN-CVE-2020-12351

  • linux Ubuntu 18.04 LTS 4.15.0-122.124
  • linux Ubuntu 20.04 LTS 5.4.0-52.57
  • linux Ubuntu 22.04 LTS 5.15.0-130.140
  • linux Ubuntu 24.04 LTS 6.8.0-35.35
  • linux-aws Ubuntu 22.04 LTS 5.15.0-1076.83
  • linux-aws Ubuntu 24.04 LTS 6.8.0-1009.9
  • linux-gcp Ubuntu 22.04 LTS 5.15.0-1074.83
  • linux-gcp Ubuntu 24.04 LTS 6.8.0-1008.9

ubuntu advisories UBUNTU-CVE-2020-12351

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kernel RHEL 7 3.10.0-1160.2.2.el7
  • perf RHEL 7 3.10.0-1160.2.2.el7
  • bpftool RHEL 7 3.10.0-1160.2.2.el7
  • python-perf RHEL 7 3.10.0-1160.2.2.el7
  • kernel-kdump RHEL 7 3.10.0-1160.2.2.el7
  • kernel-tools RHEL 7 3.10.0-1160.2.2.el7
  • kernel-tools-libs RHEL 7 3.10.0-1160.2.2.el7
  • kernel-bootwrapper RHEL 7 3.10.0-1160.2.2.el7

red hat advisories RHSA-2020:4276RHSA-2020:4288RHSA-2020:4277RHSA-2020:4280RHSA-2020:4281RHSA-2020:4278

  • sca-patterns-hae SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.10.3.1
  • sca-patterns-base SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.0-150300.10.3.1
  • sca-patterns-suma SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.0-150300.9.3.1
  • sca-server-report SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.11.3.1
  • sca-patterns-sle11 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.18.3.1
  • sca-patterns-sle12 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.3.3.1
  • sca-patterns-sle15 SLE Module for Server Applications 15 SP3, openSUSE Leap 15.3 1.5.1-150300.14.3.1
  • kernel-syms SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 4.12.14-95.65.1

suse advisories SUSE-FU-2022:4496-1SUSE-SU-2020:3544-1SUSE-SU-2020:3532-1SUSE-SU-2020:3522-1SUSE-SU-2020:3513-1SUSE-SU-2020:3512-1

  • kernel-source openSUSE Tumbleweed 5.14.6-1.4
  • sca-patterns-sle12 openSUSE Tumbleweed 1.0.8-2.2
  • sca-patterns-sle15 openSUSE Tumbleweed 1.0.8-2.2
  • kernel-source openSUSE Tumbleweed 6.6.17-1.1
  • kernel-rt openSUSE Leap 15.2 5.3.18-lp152.3.5.1
  • kernel-syms-rt openSUSE Leap 15.2 5.3.18-lp152.3.5.1
  • kernel-rt_debug openSUSE Leap 15.2 5.3.18-lp152.3.5.1
  • kernel-source-rt openSUSE Leap 15.2 5.3.18-lp152.3.5.1

opensuse advisories openSUSE-SU-2024:10728-1openSUSE-SU-2024:11370-1openSUSE-SU-2024:11371-1openSUSE-SU-2024:13704-1openSUSE-SU-2021:0242-1openSUSE-SU-2020:2112-1

  • linux Arch Linux 5.9.1.arch1-1
  • linux-zen Arch Linux 5.9.1.zen2-1
  • linux-lts Arch Linux 5.4.72-1
  • linux-hardened Arch Linux 5.8.16.a-1

arch linux advisories AVG-1248AVG-1249AVG-1250AVG-1251

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-2020-12351 updated cvss 8.8

kernel: net: bluetooth: type confusion while processing AMP packets

  • Red Hat CodeReady Linux Builder (v. 8) kernel-debuginfo-common-x86_64 4.18.0-193.28.1.el8_2, kernel-debuginfo-common-aarch64 4.18.0-193.28.1.el8_2, kernel-debuginfo-common-ppc64le 4.18.0-193.28.1.el8_2
    fixed: vendor fix RHSA-2020:4286
  • Red Hat CodeReady Linux Builder EUS (v. 8.1) kernel-debuginfo-common-x86_64 4.18.0-147.32.1.el8_1, kernel-debuginfo-common-aarch64 4.18.0-147.32.1.el8_1, kernel-debuginfo-common-ppc64le 4.18.0-147.32.1.el8_1
    fixed: vendor fix RHSA-2020:4287
  • Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-193.28.1.el8_2, kernel 4.18.0-193.28.1.el8_2, bpftool 4.18.0-193.28.1.el8_2, kernel-core 4.18.0-193.28.1.el8_2, kernel-tools 4.18.0-193.28.1.el8_2, python3-perf 4.18.0-193.28.1.el8_2, +15 more
    fixed: vendor fix RHSA-2020:4286
  • Red Hat Enterprise Linux BaseOS E4S (v. 8.0) perf 4.18.0-80.30.1.el8_0, kernel 4.18.0-80.30.1.el8_0, bpftool 4.18.0-80.30.1.el8_0, kernel-core 4.18.0-80.30.1.el8_0, kernel-tools 4.18.0-80.30.1.el8_0, python3-perf 4.18.0-80.30.1.el8_0, +9 more
    fixed: vendor fix RHSA-2020:4288
  • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) perf 4.18.0-147.32.1.el8_1, kernel 4.18.0-147.32.1.el8_1, bpftool 4.18.0-147.32.1.el8_1, kernel-core 4.18.0-147.32.1.el8_1, kernel-tools 4.18.0-147.32.1.el8_1, python3-perf 4.18.0-147.32.1.el8_1, +15 more
    fixed: vendor fix RHSA-2020:4287
  • Red Hat Enterprise Linux Client (v. 7) perf 3.10.0-1160.2.2.el7, kernel 3.10.0-1160.2.2.el7, bpftool 3.10.0-1160.2.2.el7, python-perf 3.10.0-1160.2.2.el7, kernel-tools 3.10.0-1160.2.2.el7, kernel-tools-libs 3.10.0-1160.2.2.el7, +2 more Red Hat Enterprise Linux Client Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.2.2.el7
    fixed: vendor fix RHSA-2020:4276
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) perf 3.10.0-957.61.2.el7, kernel 3.10.0-957.61.2.el7, bpftool 3.10.0-957.61.2.el7, python-perf 3.10.0-957.61.2.el7, kernel-tools 3.10.0-957.61.2.el7, kernel-tools-libs 3.10.0-957.61.2.el7, +2 more
    fixed: vendor fix RHSA-2020:4281
  • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) perf 3.10.0-1062.37.1.el7, kernel 3.10.0-1062.37.1.el7, bpftool 3.10.0-1062.37.1.el7, python-perf 3.10.0-1062.37.1.el7, kernel-tools 3.10.0-1062.37.1.el7, kernel-tools-libs 3.10.0-1062.37.1.el7, +2 more
    fixed: vendor fix RHSA-2020:4277
show 18 more
  • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.2.2.el7
    fixed: vendor fix RHSA-2020:4276
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) kernel-debuginfo-common-x86_64 3.10.0-957.61.2.el7
    fixed: vendor fix RHSA-2020:4281
  • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) kernel-debuginfo-common-x86_64 3.10.0-1062.37.1.el7
    fixed: vendor fix RHSA-2020:4277
  • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) perf 4.14.0-115.32.1.el7a, kernel 4.14.0-115.32.1.el7a, kernel-alt 4.14.0-115.32.1.el7a, python-perf 4.14.0-115.32.1.el7a, kernel-tools 4.14.0-115.32.1.el7a, kernel-tools-libs 4.14.0-115.32.1.el7a, +3 more Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debuginfo-common-ppc64le 4.14.0-115.32.1.el7a
    fixed: vendor fix RHSA-2020:4279
  • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt 3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-trace 3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.2.2.rt56.1134.el7 Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt 3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-kvm 3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-trace 3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-debug-kvm 3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-trace-kvm 3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-debuginfo-common-x86_64 3.10.0-1160.2.2.rt56.1134.el7
    fixed: vendor fix RHSA-2020:4280
  • Red Hat Enterprise Linux Real Time (v. 8) kernel-rt 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-core 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-modules 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-debug-core 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-debug-modules 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-modules-extra 4.18.0-193.28.1.rt13.77.el8_2, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 8) kernel-rt 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-kvm 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-core 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-modules 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-debug-kvm 4.18.0-193.28.1.rt13.77.el8_2, kernel-rt-debug-core 4.18.0-193.28.1.rt13.77.el8_2, +4 more
    fixed: vendor fix RHSA-2020:4289
  • Red Hat Enterprise Linux Server (v. 7) perf 3.10.0-1160.2.2.el7, kernel 3.10.0-1160.2.2.el7, bpftool 3.10.0-1160.2.2.el7, python-perf 3.10.0-1160.2.2.el7, kernel-kdump 3.10.0-1160.2.2.el7, kernel-tools 3.10.0-1160.2.2.el7, +7 more
    fixed: vendor fix RHSA-2020:4276
  • Red Hat Enterprise Linux Server AUS (v. 7.4) perf 3.10.0-693.77.1.el7, kernel 3.10.0-693.77.1.el7, python-perf 3.10.0-693.77.1.el7, kernel-tools 3.10.0-693.77.1.el7, kernel-tools-libs 3.10.0-693.77.1.el7, kernel-abi-whitelists 3.10.0-693.77.1.el7, +1 more Red Hat Enterprise Linux Server E4S (v. 7.4) perf 3.10.0-693.77.1.el7, kernel 3.10.0-693.77.1.el7, python-perf 3.10.0-693.77.1.el7, kernel-tools 3.10.0-693.77.1.el7, kernel-tools-libs 3.10.0-693.77.1.el7, kernel-bootwrapper 3.10.0-693.77.1.el7, +3 more
    fixed: vendor fix RHSA-2020:4278
  • Red Hat Enterprise Linux Server EUS (v. 7.6) perf 3.10.0-957.61.2.el7, kernel 3.10.0-957.61.2.el7, bpftool 3.10.0-957.61.2.el7, python-perf 3.10.0-957.61.2.el7, kernel-kdump 3.10.0-957.61.2.el7, kernel-tools 3.10.0-957.61.2.el7, +7 more
    fixed: vendor fix RHSA-2020:4281
  • Red Hat Enterprise Linux Server EUS (v. 7.7) perf 3.10.0-1062.37.1.el7, kernel 3.10.0-1062.37.1.el7, bpftool 3.10.0-1062.37.1.el7, python-perf 3.10.0-1062.37.1.el7, kernel-kdump 3.10.0-1062.37.1.el7, kernel-tools 3.10.0-1062.37.1.el7, +7 more
    fixed: vendor fix RHSA-2020:4277
  • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debuginfo-common-ppc64 3.10.0-1160.2.2.el7, kernel-debuginfo-common-x86_64 3.10.0-1160.2.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-1160.2.2.el7
    fixed: vendor fix RHSA-2020:4276
  • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.77.1.el7 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.77.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-693.77.1.el7
    fixed: vendor fix RHSA-2020:4278
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) kernel-debuginfo-common-ppc64 3.10.0-957.61.2.el7, kernel-debuginfo-common-x86_64 3.10.0-957.61.2.el7, kernel-debuginfo-common-ppc64le 3.10.0-957.61.2.el7
    fixed: vendor fix RHSA-2020:4281
  • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) kernel-debuginfo-common-ppc64 3.10.0-1062.37.1.el7, kernel-debuginfo-common-x86_64 3.10.0-1062.37.1.el7, kernel-debuginfo-common-ppc64le 3.10.0-1062.37.1.el7
    fixed: vendor fix RHSA-2020:4277
  • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) kernel-debuginfo-common-x86_64 3.10.0-693.77.1.el7 Red Hat Enterprise Linux Server TUS (v. 7.4) perf 3.10.0-693.77.1.el7, kernel 3.10.0-693.77.1.el7, python-perf 3.10.0-693.77.1.el7, kernel-tools 3.10.0-693.77.1.el7, kernel-tools-libs 3.10.0-693.77.1.el7, kernel-abi-whitelists 3.10.0-693.77.1.el7, +1 more
    fixed: vendor fix RHSA-2020:4278
  • Red Hat Enterprise Linux Workstation (v. 7) perf 3.10.0-1160.2.2.el7, kernel 3.10.0-1160.2.2.el7, bpftool 3.10.0-1160.2.2.el7, python-perf 3.10.0-1160.2.2.el7, kernel-tools 3.10.0-1160.2.2.el7, kernel-tools-libs 3.10.0-1160.2.2.el7, +2 more Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-debuginfo-common-x86_64 3.10.0-1160.2.2.el7
    fixed: vendor fix RHSA-2020:4276
  • Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS perf 3.10.0-957.61.2.el7, python-perf 3.10.0-957.61.2.el7
    fixed: vendor fix RHSA-2020:4281
  • 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 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

Timeline

  1. Published
  2. First public exploit (EDB-49754)

Exploit prediction

7.76% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-49754 Linux Kernel 5.4 - 'BleedingTooth' Bluetooth Zero-Click Remote Code Execution remote, 2021-04-08
  • packetstormsecurity.com http://packetstormsecurity.com/files/162131/Linux-Kernel-5.4-BleedingTooth-Remote-Code-Execution.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.8 AV:A/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • n/a BlueZ

Classification

Weakness
  • CWE-20 Improper Input Validation
Technology feeds

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.