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Integer Underflow Affecting kernel-core package, versions <0:4.18.0-348.12.2.el8_5

Severity

 Recommended
0.0
high
0
10

Based on Rocky Linux security rating

    Threat Intelligence

    Exploit Maturity
    Mature
    EPSS
    0.27% (69th percentile)

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  • Snyk ID SNYK-ROCKY8-KERNELCORE-3278217
  • published 3 Feb 2023
  • disclosed 11 Feb 2022
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Introduced: 11 Feb 2022

CVE-2022-0185 Open this link in a new tab
CWE-191 Open this link in a new tab

How to fix?

Upgrade Rocky-Linux:8 kernel-core to version 0:4.18.0-348.12.2.el8_5 or higher.
This issue was patched in RLSA-2022:0188.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-core package and not the kernel-core package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A heap-based buffer overflow flaw was found in the way the legacy_parse_param function in the Filesystem Context functionality of the Linux kernel verified the supplied parameters length. An unprivileged (in case of unprivileged user namespaces enabled, otherwise needs namespaced CAP_SYS_ADMIN privilege) local user able to open a filesystem that does not support the Filesystem Context API (and thus fallbacks to legacy handling) could use this flaw to escalate their privileges on the system.

References

CVSS Scores

version 3.1
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NVD

8.4 high
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

SUSE

7.8 high
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Red Hat

7.8 high