CVE-2023-52927
netfilter: allow exp not to be removed in nf_ct_find_expectation
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Mar 14, 2025 |
| Last Updated | May 12, 2026 |
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Affected Versions
Linux / Linux
1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e < 3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec 1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e < 4914109a8e1e494c6aa9852f9e84ec77a5fc643f
Linux / Linux
5.18
References
git.kernel.org: https://git.kernel.org/stable/c/3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec git.kernel.org: https://git.kernel.org/stable/c/4914109a8e1e494c6aa9852f9e84ec77a5fc643f seadragnol.github.io: https://seadragnol.github.io/posts/CVE-2023-52927/ lists.debian.org: https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html cert-portal.siemens.com: https://cert-portal.siemens.com/productcert/html/ssa-082556.html