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CVE-2023-2019

18
FAUCET Score

CVE-2023-2019 is a denial-of-service vulnerability in the Linux kernel's netdevsim device driver, stemming from improper reference count management during event scheduling. This flaw affects various Linux distributions, including Red Hat Enterprise Linux. Rated with a CVSS score of 4.4 (Medium), it requires high privileges and local access to exploit, potentially leading to system unavailability. There is currently no known active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.0CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.4MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 75th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (8)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 ARMFixed in: 5.15.111.1-1
microsoftpatch availablevia msrc
Product: 17889-16823Fixed in: 5.15.111.1-1
microsoftpatch availablevia msrc
Product: cbl2 kernel 5.15.111.1-1 on CBL Mariner 2.0Fixed in: 5.15.111.1-1
microsoftpatch availablevia msrc
Product: CBL Mariner 2.0 x64Fixed in: 5.15.111.1-1
redhatpatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (3)

microsoft2023-May/CVE-2023-2019

CVE-2023-2019

May 9, 2023
redhatCVE-2023-2019Moderate

kernel: netdevsim: fib: reference count leak on route deletion failure

Apr 13, 2023
microsoft2023-Apr/CVE-2023-2019Moderate

A flaw was found in the Linux kernel's netdevsim device driver within the scheduling of events. This issue results from the improper management of a reference count. This may allow an attacker to create a denial of service condition on the system.

Apr 11, 2023

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
github.com / torvalds/linux/commit/180a6a3ee60a
Patch
zerodayinitiative.com / advisories/ZDI-CAN-17811
Third Party AdvisoryVDB Entry