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CVE-2023-52556

Date: March 1, 2024

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.

Language: C

Severity Score

Related Resources (4)

https://ftp.openbsd.org/pub/OpenBSD/patches/7.4/common/009_pf.patch.sig
https://nvd.nist.gov/vuln/detail/CVE-2023-52556
https://github.com/openbsd/src/commit/9d9f4dc6c833cb79d13f836581e3a781d06842e7
https://www.mend.io/vulnerability-database/CVE-2023-52556

Severity Score

Weakness Type (CWE)

Time-of-check Time-of-use (TOCTOU) Race Condition

CWE-367

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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