CVE-2023-52556

OpenBSD 7.4 pf state race condition kernel crash

Description

In OpenBSD 7.4 before errata 009, a race condition between pf(4)'s processing of packets and expiration of packet states may cause a kernel panic.

Category

6.2
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: OpenBSD OpenBSD
Published at:
Updated at:

References

Link Tags
https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/009_pf.patch.sig
https://github.com/openbsd/src/commit/9d9f4dc6c833cb79d13f836581e3a781d06842e7

Frequently Asked Questions

What is the severity of CVE-2023-52556?
CVE-2023-52556 has been scored as a medium severity vulnerability.
How to fix CVE-2023-52556?
To fix CVE-2023-52556, 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-2023-52556 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-52556 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-2023-52556?
CVE-2023-52556 affects OpenBSD OpenBSD.
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