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CVE-2023-6622

17
FAUCET Score

CVE-2023-6622 describes a null pointer dereference vulnerability in the Linux kernel's nf_tables component, specifically within the nft_dynset_init() function, affecting various Fedora and Red Hat Enterprise Linux distributions. This medium-severity flaw (CVSS 5.5) allows a local attacker with CAP_NET_ADMIN privileges to trigger a denial of service. Currently, there is no public exploit code available, nor is there evidence of active exploitation or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
38CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*
39CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*
>= 5.11, <= 6.6CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
6.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.7:rc1:*:*:*:*:*:*
6.7CPE matchmatch criteria
cpe:2.3:o:linux:linux_kernel:6.7:rc2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.32%
Probability of exploitation in next 30 days
EPSS Percentile
24.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0032 is in the 81st percentile among its peer group of 15,940 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: cbl2 kernel 5.15.143.1-1 on CBL Mariner 2.0Fixed in: 5.15.143.1-1
microsoftpatch availablevia msrc
Product: 18220-16823Fixed in: 5.15.143.1-1
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-0:5.14.0-427.13.1.el9_4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-0:4.18.0-553.el8_10
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt-0:4.18.0-553.rt7.342.el8_10
View patch
redhatpatch availablevia nvd_reference
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (2)

microsoft2023-Dec/CVE-2023-6622Moderate

Kernel: null pointer dereference vulnerability in nft_dynset_init()

Dec 12, 2023
redhatCVE-2023-6622Moderate

kernel: null pointer dereference vulnerability in nft_dynset_init()

Dec 8, 2023

References

lists.fedoraproject.org / archives/list/[email protected]/message/AAOVK2F3ALGKYIQ5IOMAYEC2DGI7BWAW
Third Party Advisory
lists.fedoraproject.org / archives/list/[email protected]/message/G3AGDVE3KBLOOYBPISFDS74R4YAZEDAY
Third Party Advisory
access.redhat.com / errata/RHSA-2024:2394
Third Party Advisory
access.redhat.com / errata/RHSA-2024:2950
Third Party Advisory
access.redhat.com / errata/RHSA-2024:3138
Third Party Advisory
access.redhat.com / security/cve/CVE-2023-6622
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatch
github.com / torvalds/linux/commit/3701cd390fd731ee7ae8b8006246c8db82c72bea
Patch