CVE-2023-6622
Kernel: null pointer dereference vulnerability in nft_dynset_init()
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| redhatCNA (assigner) | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Analyzed | 3.1 | Medium5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.32% · top 75% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Weakness
Affected products
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:4.18.0-553.rt7.342.el8_10 – < *
Red Hat · Red Hat Enterprise Linux 8
- unaffected 0:4.18.0-553.el8_10 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-427.13.1.el9_4 – < *
Red Hat · Red Hat Enterprise Linux 9
- unaffected 0:5.14.0-427.13.1.el9_4 – < *
Red Hat · Red Hat Enterprise Linux 6
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 7
All versions: unaffected
Red Hat · Red Hat Enterprise Linux 9
All versions: affected
What to do
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
References (8)
- RHSA-2024:2394 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:2950 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- RHSA-2024:3138 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://access.redhat.com/security/cve/CVE-2023-6622 (opens in a new tab)vdb-entryx_refsource_REDHATx_transferred
- RHBZ#2253632 (opens in a new tab)issue-trackingx_refsource_REDHATx_transferred
- https://github.com/torvalds/linux/commit/3701cd390fd731ee7ae8b8006246c8db82c72bea (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/AAOVK2F3ALGKYIQ5IOMAYEC2DGI7BWAW/ (opens in a new tab)x_transferred
- https://lists.fedoraproject.org/archives/list/[email protected]/message/G3AGDVE3KBLOOYBPISFDS74R4YAZEDAY/ (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-6622)Record last updated .