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CVE-2023-6779

An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library.

Impact

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.

Affected products

VendorProductAffected versions
GnuGlibc
from 2.37 before 2.39
FedoraprojectFedora
Versions 38, 39

Weakness classification

CWE-122CWE-787

References