CVE-2019-19767

Aliases:UBUNTU-CVE-2019-19767DEBIAN-CVE-2019-19767
Advisory lineage Upstream: 0 Downstream: 25
Modified
Published: 12 Dec 2019, 19:39
Last modified:05 Aug 2024, 02:25

Vulnerability Summary

Overall Risk (default)
medium
32/100
CVSS Score
5.5 MEDIUM
v3.1 (nvd)
EPSS Score
2.08% LOW
2% probability +1.70%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

12 Dec 2019, 19:39
Published
Vulnerability first disclosed
05 Aug 2024, 02:25
Last Modified
Vulnerability information updated

Description

The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163.

CVSS Metrics

  • v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 4.3AV:N/AC:M/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 2.08%• Percentile: 81%

Techniques & Countermeasures

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

    < 5.3.15-1 | < 5.3.15-1 | < 5.3.15-1 | < 5.3.15-1

  • ubuntu•linux

    < 4.15.0-88.88

  • ubuntu•linux-aws

    < 4.15.0-1060.62

  • ubuntu•linux-aws-5.0

    < 5.0.0-1024.27~18.04.1

  • ubuntu•linux-aws-fips

    < 4.15.0-2018.18 | all

  • ubuntu•linux-aws-hwe

    < 4.15.0-1060.62~16.04.1

  • ubuntu•linux-azure

    < 4.15.0-1071.76~14.04.1 | < 4.15.0-1071.76 | < 5.0.0-1029.31~18.04.1

  • ubuntu•linux-azure-5.3

    < 5.3.0-1013.14~18.04.1

  • ubuntu•linux-azure-edge

    all

  • ubuntu•linux-azure-fde

    all

  • ubuntu•linux-azure-fips

    < 4.15.0-2006.7 | all

  • ubuntu•linux-bluefield

    all

  • ubuntu•linux-gcp

    < 4.15.0-1055.59 | < 5.0.0-1029.30~18.04.1

  • ubuntu•linux-gcp-5.3

    < 5.3.0-1012.13~18.04.1

  • ubuntu•linux-gcp-edge

    all

  • ubuntu•linux-gcp-fips

    all

  • ubuntu•linux-gke

    all

  • ubuntu•linux-gke-4.15

    < 4.15.0-1052.55

  • ubuntu•linux-gke-5.0

    < 5.0.0-1029.30~18.04.1

  • ubuntu•linux-gke-5.3

    < 5.3.0-1012.13~18.04.1

  • ubuntu•linux-hwe

    < 4.15.0-88.88~16.04.1 | < 5.3.0-40.32~18.04.1

  • ubuntu•linux-hwe-edge

    all | all

  • ubuntu•linux-intel-iot-realtime

    all

  • ubuntu•linux-kvm

    < 4.15.0-1053.53

  • ubuntu•linux-oem

    < 4.15.0-1073.83

  • ubuntu•linux-oem-osp1

    < 5.0.0-1037.42

  • ubuntu•linux-oracle

    < 4.15.0-1033.36~16.04.1 | < 4.15.0-1033.36

  • ubuntu•linux-oracle-5.0

    < 5.0.0-1010.15~18.04.1

  • ubuntu•linux-raspi-realtime

    all

  • ubuntu•linux-raspi2

    < 4.15.0-1055.59 | all

  • ubuntu•linux-raspi2-5.3

    < 5.3.0-1018.20~18.04.1

  • ubuntu•linux-realtime

    all

  • ubuntu•linux-riscv

    all

  • ubuntu•linux-snapdragon

    < 4.15.0-1072.79

  • linux•linux_kernel

    < 5.4.2

References (21)