Integer Underflow Affecting kernel-abi-stablelists 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-KERNELABISTABLELISTS-3278216
  • published 3 Feb 2023
  • disclosed 11 Feb 2022

How to fix?

Upgrade Rocky-Linux:8 kernel-abi-stablelists 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-abi-stablelists package and not the kernel-abi-stablelists 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.

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
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SUSE

7.8 high
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Red Hat

7.8 high