CVE-2022-1055

Advisory lineage Upstream: 0 Downstream: 20
Modified
Published: 29 Mar 2022, 15:05
Last modified:02 Aug 2024, 23:47

Vulnerability Summary

Overall Risk (default)
medium
44/100
CVSS Score
8.6 HIGH
v4.0 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

29 Mar 2022, 15:05
Published
Vulnerability first disclosed
02 Aug 2024, 23:47
Last Modified
Vulnerability information updated

Description

A use-after-free exists in the Linux Kernel in tc_new_tfilter that could allow a local attacker to gain privilege escalation. The exploit requires unprivileged user namespaces. We recommend upgrading past commit 04c2a47ffb13c29778e2a14e414ad4cb5a5db4b5

CVSS Metrics

  • v4.0•HIGH•Score: 8.6CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
  • v4.0•HIGH•Score: 8.6CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  • 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: 0.02%• Percentile: 7%

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

  • canonical•ubuntu_linux

    16.04 | 18.04 | 20.04 | 21.10 | 22.04

  • fedoraproject•fedora

    35

  • Unknown•Kernel

    < v5.17-rc3

  • linux•linux_kernel

    ≥ 5.1, < 5.17 | 5.17 | 5.17:rc1 | 5.17:rc2

  • netapp•h300e

    na

  • netapp•h300s_firmware

    na

  • netapp•h410c_firmware

    na

  • netapp•h410s_firmware

    na

  • netapp•h500e

    na

  • netapp•h500s_firmware

    na

  • netapp•h700e

    na

  • netapp•h700s_firmware

    na

  • redhat•enterprise_linux

    8.0

References (5)