CVE-2020-8835

Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 02 Apr 2020, 18:00
Last modified:17 Sept 2024, 02:15

Vulnerability Summary

Overall Risk (default)
medium
46/100
CVSS Score
7.8 HIGH
v3.1 (cve.org)
EPSS Score
23.27% HIGH
23% probability -1.82%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

02 Apr 2020, 18:00
Published
Vulnerability first disclosed
17 Sept 2024, 02:15
Last Modified
Vulnerability information updated

Description

In the Linux kernel 5.5.0 and newer, the bpf verifier (kernel/bpf/verifier.c) did not properly restrict the register bounds for 32-bit operations, leading to out-of-bounds reads and writes in kernel memory. The vulnerability also affects the Linux 5.4 stable series, starting with v5.4.7, as the introducing commit was backported to that branch. This vulnerability was fixed in 5.6.1, 5.5.14, and 5.4.29. (issue is aka ZDI-CAN-10780)

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
  • 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•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 23.27%• Percentile: 96%

Techniques & Countermeasures

  • CWE-125•Out-of-bounds Read

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

  • CWE-787•Out-of-bounds Write

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

Affected Systems

  • canonical•ubuntu_linux

    18.04 | 19.10

  • fedoraproject•fedora

    30 | 31 | 32

  • linux kernel•linux kernel

    ≥ 5.6-stable, < 5.6.1 | ≥ 5.5-stable, < 5.5.14 | ≥ 5.4.7, < 5.4-stable*

  • linux•linux_kernel

    ≥ 5.4.7, < 5.4.29 | ≥ 5.5.0, < 5.5.14 | ≥ 5.6, < 5.6.1

  • netapp•8300_firmware

    na

  • netapp•8700_firmware

    na

  • netapp•a220_firmware

    na

  • netapp•a320_firmware

    na

  • netapp•a400_firmware

    na

  • netapp•a700s_firmware

    na

  • netapp•a800_firmware

    na

  • netapp•c190_firmware

    na

  • netapp•cloud_backup

    na

  • netapp•fas2720_firmware

    na

  • netapp•fas2750_firmware

    na

  • netapp•h300e

    na

  • netapp•h300s_firmware

    na

  • netapp•h410s_firmware

    na

  • netapp•h500e

    na

  • netapp•h500s_firmware

    na

  • netapp•h610c_firmware

    na

  • netapp•h610s_firmware

    na

  • netapp•h615c_firmware

    na

  • netapp•h700e

    na

  • netapp•h700s_firmware

    na

  • netapp•hci_management_node

    na

  • netapp•solidfire

    na

  • netapp•steelstore_cloud_integrated_storage

    na

References (12)