CVE-2023-52927

netfilter: allow exp not to be removed in nf_ct_find_expectation

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.

N/A

CVSS

Severity:

EPSS 0.03%

Affected: Linux Linux

References

Link	Tags
https://git.kernel.org/stable/c/3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec
https://git.kernel.org/stable/c/4914109a8e1e494c6aa9852f9e84ec77a5fc643f

Frequently Asked Questions

What is the severity of CVE-2023-52927?: CVE-2023-52927 has not yet been assigned a CVSS score.
How to fix CVE-2023-52927?: To fix CVE-2023-52927, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-52927 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-52927 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-52927?: CVE-2023-52927 affects Linux Linux, Linux Linux.

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