CVE-2023-20938: google android Use After Free

CVSS: 8.1v3.1HighModified

AliasesUBUNTU-CVE-2023-20938DEBIAN-CVE-2023-20938

Published 28-02-2023Last modified 02-08-2024

Vulnerability summary

CVE-2023-20938 is a high (CVSS 8.1) Use After Free vulnerability in google android. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 25.7% of scored vulnerabilities.

Overall risk

32/100

0100

Medium · default modelHow is this calculated?

CVSS score

8.1/10

010

High · v3.1 (CVE.org)

EPSS score

0.34%

0%100%

Low · +0.01 pp in 30 days

KEVNot listedIn no KEV catalog

RansomwareNone recordedNo known use recorded

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 11

USN-5917-1 USN-5934-1 USN-5939-1 USN-5940-1 USN-5951-1 USN-6000-1+5 more

Timeline

28-02-2023
PublishedVulnerability first disclosed.
02-08-2024
Last modifiedVulnerability information updated.

Description

In binder_transaction_buffer_release of binder.c, there is a possible use after free due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-257685302References: Upstream kernel

CVSS metrics

4 scores · 4 sources · 1 version

v3.18.1

EPSS trend

Probability

0.34%

Chance of exploitation in the next 30 days

Percentile

26%

Versus all other CVEs

30-day change

+0.01 pp

From 0.33% on 21-09-2026

21-09-202621-10-2026

EPSS score

0.34%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-416Use After FreeThe product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected systems

Ubuntu84 products

linuxAll versions (No fix recorded) | < 5.4.0-144.161 | < 5.15.0-72.79
linux-awsAll versions (No fix recorded) | < 5.4.0-1097.105 | < 5.15.0-1036.40
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)
linux-aws-5.13All versions (No fix recorded)

linux-aws-5.15< 5.15.0-1036.40~20.04.1
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1097.105~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-fipsAll versions (No fix recorded) | < 5.4.0-1099.107+fips1
linux-aws-hweAll versions (No fix recorded)
linux-azureAll versions (No fix recorded) | < 5.4.0-1104.110 | < 5.15.0-1038.45
linux-azure-4.15All versions (No fix recorded)
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1038.45~20.04.1
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1104.110~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fde< 5.15.0-1038.45.1
linux-azure-fipsAll versions (No fix recorded) | < 5.4.0-1104.110+fips1
linux-bluefield< 5.4.0-1059.65 | < 5.15.0-1017.19
linux-fipsAll versions (No fix recorded) | < 5.4.0-1073.82
linux-gcpAll versions (No fix recorded) | < 5.4.0-1101.110 | < 5.15.0-1034.42
linux-gcp-4.15All versions (No fix recorded)
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1034.42~20.04.1
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1101.110~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-fipsAll versions (No fix recorded) | < 5.4.0-1101.110+fips1
linux-gke< 5.4.0-1095.102 | < 5.15.0-1033.38
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15< 5.15.0-1033.38~20.04.1
linux-gke-5.4All versions (No fix recorded)
linux-gkeop< 5.4.0-1065.69 | < 5.15.0-1020.25
linux-gkeop-5.15< 5.15.0-1020.25~20.04.1
linux-gkeop-5.4All versions (No fix recorded)
linux-hweAll versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-72.79~20.04.1
linux-hwe-5.4< 5.4.0-144.161~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1045.50 | < 5.15.0-1030.33
linux-ibm-5.4< 5.4.0-1045.50~18.04.1
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtime< 5.15.0-1028.33
linux-intel-iotg< 5.15.0-1030.35
linux-intel-iotg-5.15< 5.15.0-1030.35~20.04.1
linux-iot< 5.4.0-1013.15
linux-kvmAll versions (No fix recorded) | < 5.4.0-1087.93 | < 5.15.0-1033.38
linux-lowlatency< 5.15.0-72.79
linux-lowlatency-hwe-5.15< 5.15.0-72.79~20.04.1
linux-lts-xenialAll versions (No fix recorded)
linux-nvidia< 5.15.0-1025.25
linux-nvidia-tegra-5.15< 5.15.0-1014.14~20.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17< 5.17.0-1011.12
linux-oem-5.6All versions (No fix recorded)
linux-oracleAll versions (No fix recorded) | < 5.4.0-1094.103 | < 5.15.0-1035.41
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1035.41~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1094.103~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-raspi< 5.4.0-1081.92 | < 5.15.0-1029.31
linux-raspi-5.4< 5.4.0-1081.92~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1038.41
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1033.37~20.04.1
linux-riscv-5.8All versions (No fix recorded)
linux-xilinx-zynqmp< 5.4.0-1022.26

Show all 84

Debian1 product

linux< 5.17.6-1

Google1 product

androidna

3 vendors · 86 products

References

16 links

source.android.com/security/bulletin/2023-02-01PatchVendor Advisory
ubuntu.com/security/CVE-2023-20938REPORT
source.android.com/docs/security/bulletin/2023-02-01REPORT
ubuntu.com/security/notices/USN-5917-1Advisory
ubuntu.com/security/notices/USN-5934-1Advisory
ubuntu.com/security/notices/USN-5939-1Advisory
ubuntu.com/security/notices/USN-5940-1Advisory
ubuntu.com/security/notices/USN-5951-1Advisory
ubuntu.com/security/notices/USN-6000-1Advisory
ubuntu.com/security/notices/USN-6080-1Advisory

Show all 16 references

ubuntu.com/security/notices/USN-6085-1Advisory
ubuntu.com/security/notices/USN-6090-1Advisory
ubuntu.com/security/notices/USN-6133-1Advisory
ubuntu.com/security/notices/USN-6134-1Advisory
www.cve.org/CVERecord?id=CVE-2023-20938REPORT
security-tracker.debian.org/tracker/CVE-2023-20938Advisory

Vulnerability summary

Advisory lineage

Timeline

Description

CVSS metrics

EPSS trend

Known exploited

Public exploits

Weaknesses

Affected systems

References

Related vulnerabilities