CVE-2023-6622
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 8 | 0:4.18.0-553.rt7.342.el8_10 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 8 | 0:4.18.0-553.el8_10 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-427.13.1.el9_4 < * | unaffected |
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-427.13.1.el9_4 < * | unaffected |
Weaknesses
- CWE-476: NULL Pointer Dereference
Workarounds
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
## ADP Enrichment
### CVE Program Container
#### Additional References
- [https://access.redhat.com/errata/RHSA-2024:2394](https://access.redhat.com/errata/RHSA-2024:2394)
- [https://access.redhat.com/errata/RHSA-2024:2950](https://access.redhat.com/errata/RHSA-2024:2950)
- [https://access.redhat.com/errata/RHSA-2024:3138](https://access.redhat.com/errata/RHSA-2024:3138)
- [https://access.redhat.com/security/cve/CVE-2023-6622](https://access.redhat.com/security/cve/CVE-2023-6622)
- [https://bugzilla.redhat.com/show_bug.cgi?id=2253632](https://bugzilla.redhat.com/show_bug.cgi?id=2253632)
- [https://github.com/torvalds/linux/commit/3701cd390fd731ee7ae8b8006246c8db82c72bea](https://github.com/torvalds/linux/commit/3701cd390fd731ee7ae8b8006246c8db82c72bea)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AAOVK2F3ALGKYIQ5IOMAYEC2DGI7BWAW/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AAOVK2F3ALGKYIQ5IOMAYEC2DGI7BWAW/)
- [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G3AGDVE3KBLOOYBPISFDS74R4YAZEDAY/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/G3AGDVE3KBLOOYBPISFDS74R4YAZEDAY/)
## References
- [https://access.redhat.com/errata/RHSA-2024:2394](https://access.redhat.com/errata/RHSA-2024:2394)
- [https://access.redhat.com/errata/RHSA-2024:2950](https://access.redhat.com/errata/RHSA-2024:2950)
- [https://access.redhat.com/errata/RHSA-2024:3138](https://access.redhat.com/errata/RHSA-2024:3138)
- [https://access.redhat.com/security/cve/CVE-2023-6622](https://access.redhat.com/security/cve/CVE-2023-6622)
- [https://bugzilla.redhat.com/show_bug.cgi?id=2253632](https://bugzilla.redhat.com/show_bug.cgi?id=2253632)
- [https://github.com/torvalds/linux/commit/3701cd390fd731ee7ae8b8006246c8db82c72bea](https://github.com/torvalds/linux/commit/3701cd390fd731ee7ae8b8006246c8db82c72bea)
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