CVE-2023-6622

Kernel: null pointer dereference vulnerability in nft_dynset_init()

Published Dec 8, 2023 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
Description
A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel. This issue may allow a local attacker with CAP_NET_ADMIN user privilege to trigger a denial of service.

Remediation

Vendor Workaround

Mitigation for this issue is to skip loading the affected module "netfilter" onto the system till we have a fix available, this can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time. ~~~ How do I blacklist a kernel module to prevent it from loading automatically? https://access.redhat.com/solutions/41278

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-5593-1 linux security update
EUVD EUVD EUVD-2023-58845 A null pointer dereference vulnerability was found in nft_dynset_init() in net/netfilter/nft_dynset.c in nf_tables in the Linux kernel. This issue may allow a local attacker with CAP_NET_ADMIN user privilege to trigger a denial of service.
Ubuntu USN Ubuntu USN USN-6624-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6626-3 Linux kernel (Azure) vulnerabilities
Ubuntu USN Ubuntu USN USN-6628-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6628-2 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6639-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6652-1 Linux kernel (Azure) vulnerabilities
Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 5, 2026, 11:37 AM
Reserved
Dec 8, 2023, 11:50 AM
Status
Analyzed
Published
Dec 8, 2023, 6:15 PM
Modified
Nov 5, 2026, 12:17 PM
Severity
Moderate
Public date
Dec 8, 2023, 11:56 AM