Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: netfilter: allow exp not to be removed in nf_ct_find_expectation Currently nf_conntrack_in() calling nf_ct_find_expectation() will remove the exp from the hash table. However, in some scenario, we expect the exp not to be removed when the created ct will not be confirmed, like in OVS and TC conntrack in the following patches. This patch allows exp not to be removed by setting IPS_CONFIRMED in the status of the tmpl.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.18, < 6.1.130 |
| Debian | Debian Linux | 11.0 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/3fa58a6fbd1e9e5682d09cdafb08fba004cb12ecBroken Link
- https://git.kernel.org/stable/c/4914109a8e1e494c6aa9852f9e84ec77a5fc643fBroken Link
- https://seadragnol.github.io/posts/CVE-2023-52927/ExploitTechnical Description
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.htmlIssue TrackingThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
FAQ
What is CVE-2023-52927?
CVE-2023-52927 is a vulnerability with a CVSS score of 7.8 (HIGH). In the Linux kernel, the following vulnerability has been resolved: netfilter: allow exp not to be removed in nf_ct_find_expectation Currently nf_conntrack_in() calling nf_ct_find_expectation() will...
How severe is CVE-2023-52927?
CVE-2023-52927 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52927?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel, Debian Debian Linux.