CVE-2021-39714

Aliases:UBUNTU-CVE-2021-39714DEBIAN-CVE-2021-39714
Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 16 Mar 2022, 14:03
Last modified:04 Aug 2024, 02:13

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.23% LOW
0% probability +0.20%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

16 Mar 2022, 14:03
Published
Vulnerability first disclosed
04 Aug 2024, 02:13
Last Modified
Vulnerability information updated

Description

In ion_buffer_kmap_get of ion.c, there is a possible use-after-free due to an integer overflow. 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-205573273References: Upstream kernel

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.23%• Percentile: 14%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

  • CWE-416•Use After Free

    The 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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

  • debian•linux

    < 4.12.6-1 | < 4.12.6-1 | < 4.12.6-1 | < 4.12.6-1

  • ubuntu•linux

    < 4.4.0-229.263

  • ubuntu•linux-aws

    < 4.4.0-1109.115 | < 4.4.0-1145.160

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    all

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-azure

    < 4.13.0-1005.7 | all

  • ubuntu•linux-azure-5.11

    all

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-fips

    < 4.4.0-1079.86 | all

  • ubuntu•linux-gcp

    < 4.13.0-1002.5 | all

  • ubuntu•linux-gcp-5.11

    all

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-hwe

    < 4.13.0-32.35~16.04.1 | all

  • ubuntu•linux-hwe-5.11

    all

  • ubuntu•linux-hwe-5.8

    all

  • ubuntu•linux-hwe-edge

    all

  • ubuntu•linux-intel-5.13

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1110.120

  • ubuntu•linux-lts-xenial

    < 4.4.0-229.263~14.04.1

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    all

  • ubuntu•linux-oem-5.13

    all

  • ubuntu•linux-oem-5.6

    all

  • ubuntu•linux-oracle-5.0

    all

  • ubuntu•linux-oracle-5.11

    all

  • ubuntu•linux-oracle-5.3

    all

  • ubuntu•linux-oracle-5.8

    all

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    all

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-riscv-5.11

    all

  • ubuntu•linux-riscv-5.8

    all

  • ubuntu•linux-snapdragon

    < 4.15.0-1053.57

  • google•android

    na

References (8)