CVE-2023-6779

An off-by-one heap-based buffer overflow was found in the __vsysloginternal 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 INTMAX 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.

References

Affected packages

Git / github.com/bminor/glibc

Affected ranges

Type

GIT

Repo

https://github.com/bminor/glibc

Events

Introduced

a704fd9a133bfb10510e18702f48a6a9c88dbbd5

Fixed

ef321e23c20eebc6d6fb4044425c00e6df27b05f

Database specific

{
    "versions": [
        {
            "introduced": "2.37"
        },
        {
            "fixed": "2.39"
        }
    ]
}

Affected versions

glibc-2.*

glibc-2.37

glibc-2.37.9000

glibc-2.38

glibc-2.38.9000

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-6779.json"

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "38"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "39"
            }
        ]
    }
]