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CBL Mariner 2.0 Security Update: hyperv-daemons (CVE-2024-26993)

medium Nessus Plugin ID 206359

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of hyperv-daemons installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2024-26993 advisory.

 - In the Linux kernel, the following vulnerability has been resolved: fs: sysfs: Fix reference leak in sysfs_break_active_protection() The sysfs_break_active_protection() routine has an obvious reference leak in its error path. If the call to kernfs_find_and_get() fails then kn will be NULL, so the companion sysfs_unbreak_active_protection() routine won't get called (and would only cause an access violation by trying to dereference kn->parent if it was called). As a result, the reference to kobj acquired at the start of the function will never be released. Fix the leak by adding an explicit kobject_put() call when kn is NULL. (CVE-2024-26993)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2024-26993

Plugin Details

Severity: Medium

ID: 206359

File Name: mariner_CVE-2024-26993.nasl

Version: 1.1

Type: local

Published: 8/30/2024

Updated: 8/30/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 3.2

Temporal Score: 2.4

Vector: CVSS2#AV:L/AC:L/Au:S/C:P/I:N/A:P

CVSS Score Source: CVE-2024-26993

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:microsoft:cbl-mariner:hypervkvpd, p-cpe:/a:microsoft:cbl-mariner:hyperv-daemons-license, x-cpe:/o:microsoft:cbl-mariner, p-cpe:/a:microsoft:cbl-mariner:hyperv-tools, p-cpe:/a:microsoft:cbl-mariner:hyperv-daemons-debuginfo, p-cpe:/a:microsoft:cbl-mariner:hypervfcopyd, p-cpe:/a:microsoft:cbl-mariner:hypervvssd, p-cpe:/a:microsoft:cbl-mariner:hyperv-daemons

Required KB Items: Host/local_checks_enabled, Host/CBLMariner/release, Host/CBLMariner/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 8/13/2024

Vulnerability Publication Date: 4/27/2024

Reference Information

CVE: CVE-2024-26993