synced JUST NOW
01 Record

CVE-2023-52558

OpenBSD 7.4 and 7.3 m_split() network buffer kernel crash

HighPUBLISHEDCNA: cisa-cg
CNA base score7.5 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
View raw JSON

02 Description

OpenBSD 7.4 and 7.3 m_split() network buffer kernel crash

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.70% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 52.7% of scored records. A rank, not a probability.
NVD base score
7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD analysis status
Analyzed. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2024-03-01 16:33Z2 YR AGO
Last updated
2024-11-19 21:42Z1 YR AGO
Reserved
2024-03-01
Assigning CNA
cisa-cg
Record state
PUBLISHED
Severity
High (CVSS 7.5)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
  • CWE-131Incorrect Calculation of Buffer SizeBase
Data version
5.1
Document digest
2e8999f8f395d1b21ba4eca865a7f22b5726ab83f745bcf13f2b26a1b51ad8d9

05 Affected products

VendorProductVersionsPlatforms
OpenBSDOpenBSD7.3 to < 7.3 errata 019, 7.4 to < 7.4 errata 002, 7.3 to < 7.3_errata_019, 7.4 to < 7.4_errata_002—

06 References