CVE-2021-42739

Aliases:UBUNTU-CVE-2021-42739DEBIAN-CVE-2021-42739
Advisory lineage Upstream: 0 Downstream: 58
Modified
Published: 20 Oct 2021, 00:00
Last modified:04 Aug 2024, 03:38

Vulnerability Summary

Overall Risk (default)
medium
27/100
CVSS Score
6.7 MEDIUM
v3.1 (nvd)
EPSS Score
0.47% LOW
0% probability +0.43%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Oct 2021, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 03:38
Last Modified
Vulnerability information updated

Description

The firewire subsystem in the Linux kernel through 5.14.13 has a buffer overflow related to drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c, because avc_ca_pmt mishandles bounds checking.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.7CVSS:3.1/AV:L/AC:L/PR:H/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: 0.47%• Percentile: 40%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • debian•linux

    < 5.10.84-1 | < 5.14.16-1 | < 5.14.16-1 | < 5.14.16-1

  • ubuntu•linux

    all | < 4.4.0-223.256 | < 4.15.0-167.175 | < 5.4.0-97.110

  • ubuntu•linux-aws

    < 4.4.0-1103.108 | < 4.4.0-1139.153 | < 4.15.0-1119.127 | < 5.4.0-1064.67

  • ubuntu•linux-aws-5.0

    all

  • ubuntu•linux-aws-5.11

    < 5.11.0-1028.31~20.04.1

  • ubuntu•linux-aws-5.13

    < 5.13.0-1012.13~20.04.1

  • ubuntu•linux-aws-5.3

    all

  • ubuntu•linux-aws-5.4

    < 5.4.0-1064.67~18.04.1

  • ubuntu•linux-aws-5.8

    all

  • ubuntu•linux-aws-fips

    < 4.15.0-2060.62 | all | < 5.4.0-1069.73+fips2

  • ubuntu•linux-aws-hwe

    < 4.15.0-1119.126~16.04.2

  • ubuntu•linux-azure

    < 4.15.0-1130.143~14.04.1 | < 4.15.0-1130.143~16.04.1 | all | < 5.4.0-1068.71

  • ubuntu•linux-azure-4.15

    < 4.15.0-1131.144

  • ubuntu•linux-azure-5.11

    < 5.11.0-1028.31~20.04.2

  • ubuntu•linux-azure-5.13

    < 5.13.0-1013.15~20.04.1

  • ubuntu•linux-azure-5.3

    all

  • ubuntu•linux-azure-5.4

    < 5.4.0-1068.71~18.04.1

  • ubuntu•linux-azure-5.8

    all

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2042.46 | all | < 5.4.0-1073.76+fips1

  • ubuntu•linux-bluefield

    all | < 5.4.0-1026.29

  • ubuntu•linux-dell300x

    < 4.15.0-1034.39

  • ubuntu•linux-fips

    < 4.4.0-1073.79 | all | < 4.15.0-1076.85 | < 5.4.0-1041.47

  • ubuntu•linux-gcp

    < 4.15.0-1115.129~16.04.1 | all | < 5.4.0-1063.67

  • ubuntu•linux-gcp-4.15

    < 4.15.0-1115.129

  • ubuntu•linux-gcp-5.11

    < 5.11.0-1029.33~20.04.3

  • ubuntu•linux-gcp-5.13

    < 5.13.0-1013.16~20.04.1

  • ubuntu•linux-gcp-5.3

    all

  • ubuntu•linux-gcp-5.4

    < 5.4.0-1063.67~18.04.1

  • ubuntu•linux-gcp-5.8

    all

  • ubuntu•linux-gcp-fips

    < 4.15.0-2025.27 | all | < 5.4.0-1067.71~20.04.1

  • ubuntu•linux-gke

    < 5.4.0-1061.64

  • ubuntu•linux-gke-4.15

    all

  • ubuntu•linux-gke-5.4

    < 5.4.0-1061.64~18.04.1

  • ubuntu•linux-gkeop

    < 5.4.0-1032.33

  • ubuntu•linux-gkeop-5.4

    < 5.4.0-1032.33~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-167.175~16.04.1 | all

  • ubuntu•linux-hwe-5.11

    all

  • ubuntu•linux-hwe-5.13

    < 5.13.0-28.31~20.04.1

  • ubuntu•linux-hwe-5.4

    < 5.4.0-97.110~18.04.1

  • ubuntu•linux-hwe-5.8

    all

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-ibm

    < 5.4.0-1013.14

  • ubuntu•linux-ibm-5.4

    < 5.4.0-1014.15~18.04.1

  • ubuntu•linux-intel-5.13

    all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.4.0-1104.113 | < 4.15.0-1106.108 | < 5.4.0-1054.56

  • ubuntu•linux-lts-xenial

    < 4.4.0-223.256~14.04.1

  • ubuntu•linux-oem

    all

  • ubuntu•linux-oem-5.10

    < 5.10.0-1053.55

Showing first 50 affected entries in server-rendered view.

References (18)