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TI-2020-09874 Aliases CVE-2020-12351

Improper input validation in BlueZ

Priority MEDIUM 49CWE-20Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

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

Why it matters now

EPSS 0.07756 94th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Red Hat: 10 advisories

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—BlueZSee references—No fix listedCNA
  • BlueZ Vendor— Affected See references Fixed in — No fix listed CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*4.7.7 to before 4.9.240; 4.10 to before 4.14.202; 4.15 to before 4.19.152; 4.20 to before 5.4.72; 5.5 to before 5.8.16VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:-:*:*:*:*:*:*5.9.0VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc1:*:*:*:*:*:*5.9.0 rc1VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc2:*:*:*:*:*:*5.9.0 rc2VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc3:*:*:*:*:*:*5.9.0 rc3VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc4:*:*:*:*:*:*5.9.0 rc4VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc5:*:*:*:*:*:*5.9.0 rc5VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.0:rc6:*:*:*:*:*:*5.9.0 rc6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.9.1:*:*:*:*:*:*:*5.9.1VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.7.7 to before 4.9.240; 4.10 to before 4.14.202; 4.15 to before 4.19.152; 4.20 to before 5.4.72; 5.5 to before 5.8.16 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:-:*:*:*:*:*:* Versions 5.9.0 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc1:*:*:*:*:*:* Versions 5.9.0 rc1 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc2:*:*:*:*:*:* Versions 5.9.0 rc2 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc3:*:*:*:*:*:* Versions 5.9.0 rc3 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc4:*:*:*:*:*:* Versions 5.9.0 rc4 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc5:*:*:*:*:*:* Versions 5.9.0 rc5 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.0:rc6:*:*:*:*:*:* Versions 5.9.0 rc6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.9.1:*:*:*:*:*:*:* Versions 5.9.1 Vulnerable ·Linux

Remediation

Red Hat 10 advisories

  • RHSA-2020:4276 Released 2020-10-20 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Client (v. 7) bpftool-3.10.0-1160.2.2.el7, kernel-3.10.0-1160.2.2.el7, kernel-abi-whitelists-3.10.0-1160.2.2.el7 +8
    • Red Hat Enterprise Linux Client Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.2.2.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.2.2.el7
    • Red Hat Enterprise Linux Server (v. 7) bpftool-3.10.0-1160.2.2.el7, kernel-3.10.0-1160.2.2.el7, kernel-abi-whitelists-3.10.0-1160.2.2.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7) kernel-debug-devel-3.10.0-1160.2.2.el7, kernel-tools-libs-devel-3.10.0-1160.2.2.el7
    • Red Hat Enterprise Linux Workstation (v. 7) bpftool-3.10.0-1160.2.2.el7, kernel-3.10.0-1160.2.2.el7, kernel-abi-whitelists-3.10.0-1160.2.2.el7 +8
    • Red Hat Enterprise Linux Workstation Optional (v. 7) kernel-tools-libs-devel-3.10.0-1160.2.2.el7
  • RHSA-2020:4289 Released 2020-10-20 · Red Hat rating Important
    kernel-rt security and bug fix update
    • 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-debug-4.18.0-193.28.1.rt13.77.el8_2 +7
    • Red Hat Enterprise Linux Real Time for NFV (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-debug-4.18.0-193.28.1.rt13.77.el8_2 +9
  • RHSA-2020:4286 Released 2020-10-20 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder (v. 8) kernel-tools-libs-devel-4.18.0-193.28.1.el8_2
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-193.28.1.el8_2, kernel-4.18.0-193.28.1.el8_2, kernel-abi-whitelists-4.18.0-193.28.1.el8_2 +19
Show 7 more Red Hat advisories
  • RHSA-2020:4287 Released 2020-10-20 · Red Hat rating Important
    kernel security and bug fix update
    • Red Hat CodeReady Linux Builder EUS (v. 8.1) kernel-tools-libs-devel-4.18.0-147.32.1.el8_1
    • Red Hat Enterprise Linux BaseOS EUS (v. 8.1) bpftool-4.18.0-147.32.1.el8_1, kernel-4.18.0-147.32.1.el8_1, kernel-abi-whitelists-4.18.0-147.32.1.el8_1 +19
  • RHSA-2020:4288 Released 2020-10-20 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v. 8.0) bpftool-4.18.0-80.30.1.el8_0, kernel-4.18.0-80.30.1.el8_0, kernel-abi-whitelists-4.18.0-80.30.1.el8_0 +14
  • RHSA-2020:4277 Released 2020-10-19 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.7) bpftool-3.10.0-1062.37.1.el7, kernel-3.10.0-1062.37.1.el7, kernel-abi-whitelists-3.10.0-1062.37.1.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7) kernel-tools-libs-devel-3.10.0-1062.37.1.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.7) bpftool-3.10.0-1062.37.1.el7, kernel-3.10.0-1062.37.1.el7, kernel-abi-whitelists-3.10.0-1062.37.1.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.7) kernel-debug-devel-3.10.0-1062.37.1.el7, kernel-tools-libs-devel-3.10.0-1062.37.1.el7
  • RHSA-2020:4281 Released 2020-10-19 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) bpftool-3.10.0-957.61.2.el7, kernel-3.10.0-957.61.2.el7, kernel-abi-whitelists-3.10.0-957.61.2.el7 +8
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) kernel-tools-libs-devel-3.10.0-957.61.2.el7
    • Red Hat Enterprise Linux Server EUS (v. 7.6) bpftool-3.10.0-957.61.2.el7, kernel-3.10.0-957.61.2.el7, kernel-abi-whitelists-3.10.0-957.61.2.el7 +11
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) kernel-debug-devel-3.10.0-957.61.2.el7, kernel-tools-libs-devel-3.10.0-957.61.2.el7
    • Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUS kernel-devel-3.10.0-957.61.2.el7, perf-3.10.0-957.61.2.el7, python-perf-3.10.0-957.61.2.el7
  • RHSA-2020:4279 Released 2020-10-19 · Red Hat rating Important
    kernel-alt security update
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) kernel-4.14.0-115.32.1.el7a, kernel-abi-whitelists-4.14.0-115.32.1.el7a, kernel-alt-4.14.0-115.32.1.el7a +8
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) kernel-debug-devel-4.14.0-115.32.1.el7a, kernel-tools-libs-devel-4.14.0-115.32.1.el7a
  • RHSA-2020:4278 Released 2020-10-19 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) kernel-3.10.0-693.77.1.el7, kernel-abi-whitelists-3.10.0-693.77.1.el7, kernel-debug-3.10.0-693.77.1.el7 +7
    • Red Hat Enterprise Linux Server E4S (v. 7.4) kernel-3.10.0-693.77.1.el7, kernel-abi-whitelists-3.10.0-693.77.1.el7, kernel-bootwrapper-3.10.0-693.77.1.el7 +8
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.77.1.el7
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) kernel-debug-devel-3.10.0-693.77.1.el7, kernel-tools-libs-devel-3.10.0-693.77.1.el7
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) kernel-tools-libs-devel-3.10.0-693.77.1.el7
    • Red Hat Enterprise Linux Server TUS (v. 7.4) kernel-3.10.0-693.77.1.el7, kernel-abi-whitelists-3.10.0-693.77.1.el7, kernel-debug-3.10.0-693.77.1.el7 +7
  • RHSA-2020:4280 Released 2020-10-19 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux for Real Time (v. 7) kernel-rt-3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-debug-3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-debug-devel-3.10.0-1160.2.2.rt56.1134.el7 +4
    • Red Hat Enterprise Linux for Real Time for NFV (v. 7) kernel-rt-3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-debug-3.10.0-1160.2.2.rt56.1134.el7, kernel-rt-debug-devel-3.10.0-1160.2.2.rt56.1134.el7 +7

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2020:4286
Red Hat CodeReady Linux Builder EUS (v. 8.1)Fixed RHSA-2020:4287
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2020:4286
Red Hat Enterprise Linux BaseOS E4S (v. 8.0)Fixed RHSA-2020:4288
Red Hat Enterprise Linux BaseOS EUS (v. 8.1)Fixed RHSA-2020:4287
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2020:4276
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2020:4276
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)Fixed RHSA-2020:4281
Red Hat Enterprise Linux ComputeNode EUS (v. 7.7)Fixed RHSA-2020:4277
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2020:4276
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6)Fixed RHSA-2020:4281
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.7)Fixed RHSA-2020:4277
Red Hat Enterprise Linux Real Time (v. 8)Fixed RHSA-2020:4289
Red Hat Enterprise Linux Real Time for NFV (v. 8)Fixed RHSA-2020:4289
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2020:4276
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2020:4278
Red Hat Enterprise Linux Server E4S (v. 7.4)Fixed RHSA-2020:4278
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2020:4281
Red Hat Enterprise Linux Server EUS (v. 7.7)Fixed RHSA-2020:4277
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2020:4276
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2020:4278
Red Hat Enterprise Linux Server Optional E4S (v. 7.4)Fixed RHSA-2020:4278
Red Hat Enterprise Linux Server Optional EUS (v. 7.6)Fixed RHSA-2020:4281
Red Hat Enterprise Linux Server Optional EUS (v. 7.7)Fixed RHSA-2020:4277
Red Hat Enterprise Linux Server Optional TUS (v. 7.4)Fixed RHSA-2020:4278
Red Hat Enterprise Linux Server TUS (v. 7.4)Fixed RHSA-2020:4278
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2020:4276
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2020:4276
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2020:4279
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2020:4279
Red Hat Enterprise Linux for Real Time (v. 7)Fixed RHSA-2020:4280
Red Hat Enterprise Linux for Real Time for NFV (v. 7)Fixed RHSA-2020:4280
Red Hat Virtualization 4.2 Hypervisor for RHEL 7.6 EUSFixed RHSA-2020:4281
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise MRG 2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-12351

References

Exploit 1

Advisory 1

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences