What is CVE-2023-5941?

CVE-2023-5941 is a critical-severity vulnerability in Freebsd, classified under Incorrect Calculation of Buffer Size. CVSS score: 9.8/10. Published 2023-11-08.

How severe is CVE-2023-5941?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2023-5941 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Freebsd

CVE-2023-5941

In versions of FreeBSD 12.4-RELEASE prior to 12.4-RELEASE-p7 and FreeBSD 13.2-RELEASE prior to 13.2-RELEASE-p5 the __sflush() stdio function in libc does not correctly update FILE objects' write space members for write-buffered streams whe…

EPSS: 0.011 (60.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Freebsd — versions 13.2, 13.2-RELEASE, 12.4

Weakness classification (CWE)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

secteam@freebsd.org (vendor-advisory, Vendor Advisory)
secteam@freebsd.org

Frequently asked questions

What is CVE-2023-5941?: CVE-2023-5941 is a critical-severity vulnerability in Freebsd, classified under Incorrect Calculation of Buffer Size. CVSS score: 9.8/10. Published 2023-11-08.
How severe is CVE-2023-5941?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2023-5941 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.