An off-by-one heap-based buffer 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 message bigger than INT_MAX bytes, leading to an incorrect calculation of the buffer size to store the message, resulting in an application crash. This issue affects glibc 2.37 and newer.
https://www.openwall.com/lists/oss-security/2024/01/30/6
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
https://bugzilla.redhat.com/show_bug.cgi?id=2254395
http://seclists.org/fulldisclosure/2024/Feb/3
http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html