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Execution with Unnecessary Privileges Affecting kernel-debug package, versions <0:4.18.0-240.22.1.el8_3

Severity

 Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.09% (41st percentile)

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  • Snyk ID SNYK-RHEL8-KERNELDEBUG-3999242
  • published 26 Jul 2021
  • disclosed 5 Mar 2021
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Introduced: 5 Mar 2021

CVE-2021-27365 Open this link in a new tab
CWE-250 Open this link in a new tab
CWE-122 Open this link in a new tab

How to fix?

Upgrade RHEL:8 kernel-debug to version 0:4.18.0-240.22.1.el8_3 or higher.
This issue was patched in RHSA-2021:1093.

NVD Description

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

An issue was discovered in the Linux kernel through 5.11.3. Certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. An unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message.

References

CVSS Scores

version 3.1
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NVD

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

Red Hat

7.8 high
Expand this section

SUSE

7 high