CVEvulnerability

CVE-2023-5941

9.8 CRITICAL Published 2023-11-08 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2023-11-08
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-131, CWE-787

Description

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 when the write(2) system call returns an error.  Depending on the nature of an application that calls libc's stdio functions and the presence of errors returned from the write(2) system call (or an overridden stdio write routine) a heap buffer overflow may occur. Such overflows may lead to data corruption or the execution of arbitrary code at the privilege level of the calling program.

Affected configurations

• freebsd freebsd (< 12.4) • freebsd freebsd (>= 13.0 < 13.2) • freebsd freebsd 12.4 • freebsd freebsd 13.2

Related

Weakness · CWE (2)

  • CWE-131 Incorrect Calculation of Buffer Size weakness
  • CWE-787 Out-of-bounds Write weakness

References