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Servers and applications

CVE-2023-6780

An integer overflow was found in the __vsyslog_internal function of the glibc library. This function is called by the syslog and vsyslog functions. This issue occurs when these functions are called with a very long message, leading to an incorrect calculation of the buffer size to store the message, resulting in undefined behavior. This issue affects glibc 2.37 and newer.

Severity
Medium 5.3
Published
31 Jan 2024
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
2.39
Sources
NVD

Affected software

SoftwareAffected versions
GNU C LibraryServers and applications · cpe:a:gnu:glibc
  • From 2.37 before 2.39

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-6780
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-6780