CVE-2020-12351: linux linux_kernel Improper Input Validation

Modified

AliasesUBUNTU-CVE-2020-12351DEBIAN-CVE-2020-12351

Published 23-11-2020Last modified 04-08-2024

Vulnerability summary

CVE-2020-12351 is a high (CVSS 8.8) Improper Input Validation vulnerability in linux linux_kernel. EPSS estimates a 7.69% chance of exploitation in the next 30 days, higher than 94.6% of scored vulnerabilities. 2 public exploits are recorded.

Priority

Prioritisepublic exploit

Public exploit (exploit-database, 08-04-2021)

Source freshness unavailable

How is this decided?

CVSS score

8.8/10

010

High · v3.1 (NVD)

EPSS score

7.69%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits2reference, exploit-database

Advisory lineage

Upstream 0 · Downstream 50 · Related 35

Timeline

23-11-2020
PublishedVulnerability first disclosed.
04-08-2024
Last modifiedVulnerability information updated.

Description

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

CVSS metrics

4 scores · 3 sources · 2 versions

v3.18.8v2.05.8

EPSS trend

Probability

7.69%

Chance of exploitation in the next 30 days

Percentile

95%

Versus all other CVEs

30-day change

No change 0.00 pp

From 7.69% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

2 found

referenceUnverified
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
exploit-databaseremotelinuxUnverified
Linux Kernel 5.4 - 'BleedingTooth' Bluetooth Zero-Click Remote Code Execution
Maturity: poc

Weaknesses

CWE · root cause

CWE-20Improper Input ValidationThe product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Affected systems

Version check

Known conditions: adjacent network, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu49 products

linux< 4.4.0-262.296 | < 4.15.0-122.124 | < 5.4.0-52.57 | < 5.15.0-130.140 | < 6.8.0-35.35
linux-aws< 5.15.0-1076.83 | < 6.8.0-1009.9
linux-aws-5.15< 5.15.0-1075.82~20.04.1
linux-aws-fips< 4.15.0-2031.32 | All versions (No fix recorded) | < 5.4.0-1069.73+fips2 | < 5.15.0-1076.83+fips1
linux-azure< 5.15.0-1078.87 | < 6.8.0-1008.8

linux-azure-5.15< 5.15.0-1078.87~20.04.1
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1078.87.1
linux-azure-fips< 4.15.0-2013.15 | All versions (No fix recorded) | < 5.4.0-1073.76+fips1 | < 5.15.0-1078.87+fips1
linux-bluefield< 5.15.0-1058.60
linux-fips< 4.4.0-1108.115 | All versions (No fix recorded) | < 4.15.0-1045.52 | < 5.15.0-128.138+fips1
linux-gcp< 5.15.0-1074.83 | < 6.8.0-1008.9
linux-gcp-5.15< 5.15.0-1074.83~20.04.1
linux-gcp-fipsAll versions (No fix recorded) | < 5.4.0-1067.71~20.04.1 | < 5.15.0-1073.81+fips1
linux-gkeAll versions (No fix recorded) | < 5.15.0-1072.78 | < 6.8.0-1004.7
linux-gkeop< 5.15.0-1057.64
linux-hwe< 4.15.0-122.124~16.04.1 | All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-130.140~20.04.1
linux-hwe-5.4< 5.4.0-52.57~18.04.1
linux-hwe-5.8< 5.8.0-25.26~20.04.1
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.15.0-1067.70 | < 6.8.0-1006.6
linux-ibm-5.15< 5.15.0-1067.70~20.04.1
linux-intel-iot-realtime< 5.15.0-1071.73
linux-intel-iotg< 5.15.0-1071.77
linux-intel-iotg-5.15< 5.15.0-1071.77~20.04.1
linux-kvm< 5.15.0-1071.76
linux-lowlatency< 5.15.0-128.138 | < 6.8.0-35.35.1
linux-lowlatency-hwe-5.15< 5.15.0-128.138~20.04.1
linux-lts-xenial< 4.4.0-262.296~14.04.1
linux-nvidia< 5.15.0-1070.71
linux-nvidia-tegra< 5.15.0-1032.32
linux-nvidia-tegra-5.15< 5.15.0-1032.32~20.04.1
linux-nvidia-tegra-igx< 5.15.0-1020.20
linux-oem< 4.15.0-1100.110
linux-oem-5.6< 5.6.0-1032.33
linux-oem-6.8< 6.8.0-1006.6
linux-oem-osp1< 5.0.0-1071.77
linux-oracle< 5.15.0-1073.79 | < 6.8.0-1006.6
linux-oracle-5.15< 5.15.0-1072.78~20.04.1
linux-raspi< 5.4.0-1022.25 | < 5.15.0-1070.73 | < 6.8.0-1005.5
linux-raspi-5.4< 5.4.0-1022.25~18.04.1
linux-raspi-realtime< 6.8.0-2004.4
linux-raspi2< 4.15.0-1074.79 | All versions (No fix recorded)
linux-raspi2-5.3< 5.3.0-1036.38
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1075.83 | < 6.8.1-1002.2
linux-riscv< 5.4.0-37.42 | All versions (No fix recorded) | < 6.8.0-35.35.1
linux-riscv-5.15< 5.15.0-1070.74~20.04.1
linux-snapdragon< 4.15.0-1090.99
linux-xilinx-zynqmp< 5.15.0-1041.45

Show all 49

Debian1 product

linux< 5.9.1-1

Linux1 product

linux_kernel≥ 4.7.7, < 4.9.240 | ≥ 4.10, < 4.14.202 | ≥ 4.15, < 4.19.152 | ≥ 4.20, < 5.4.72 | ≥ 5.5, < 5.8.16 | 5.9.0 | 5.9.0:rc1 | 5.9.0:rc2 | 5.9.0:rc3 | 5.9.0:rc4 | 5.9.0:rc5 | 5.9.0:rc6 | 5.9.1

3 vendors · 51 products

References

19 links

www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00435.html?wapkw=CVE-2020-12351X Refsource MISCThird Party Advisory
packetstormsecurity.com/files/162131/Linux-Kernel-5.4-BleedingTooth-Remote-Code-Execution.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry
ubuntu.com/security/CVE-2020-12351REPORT
www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00435.htmlREPORT
github.com/google/security-research/security/advisories/GHSA-h637-c88j-47wqREPORT
lore.kernel.org/linux-bluetooth/20200806181714.3216076-2-luiz.dentz@gmail.com/REPORT
git.kernel.org/pub/…REPORT
ubuntu.com/security/notices/USN-4592-1Advisory
ubuntu.com/security/notices/USN-4591-1Advisory
www.cve.org/CVERecord?id=CVE-2020-12351REPORT

Show all 19 references

ubuntu.com/security/notices/USN-7179-1Advisory
ubuntu.com/security/notices/USN-7179-2Advisory
ubuntu.com/security/notices/USN-7183-1Advisory
ubuntu.com/security/notices/USN-7186-1Advisory
ubuntu.com/security/notices/USN-7179-3Advisory
ubuntu.com/security/notices/USN-7186-2Advisory
ubuntu.com/security/notices/USN-7194-1Advisory
ubuntu.com/security/notices/USN-7179-4Advisory
security-tracker.debian.org/tracker/CVE-2020-12351Advisory