glibc: An integer overflow was found in the __vsyslog_internal function of the glibc library
CVE-2023-6780 is fixed in 17 products on 1 platform, first by glibc-source 2.39-0ubuntu1, released January 30, 2024. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| glibc · Debian 12.15 (bookworm) | 2.36-9+deb12u4 | DEBIAN-CVE-2023-6780 | Jan 31, 2024 |
| glibc · Debian 13.5 (trixie) | 2.37-15 | DEBIAN-CVE-2023-6780 | Jan 31, 2024 |
| glibc · Debian 14 | 2.37-15 | DEBIAN-CVE-2023-6780 | Jan 31, 2024 |
| glibc-source · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | glibc-source 2.39-0ubuntu1 | Jan 30, 2024 |
| libc-bin · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc-bin 2.39-0ubuntu1 | Jan 30, 2024 |
| libc-dev-bin · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc-dev-bin 2.39-0ubuntu1 | Jan 30, 2024 |
| libc-devtools · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc-devtools 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6-amd64 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6-amd64 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6-dev-amd64 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6-dev-amd64 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6-dev-i386 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6-dev-i386 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6-dev-s390 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6-dev-s390 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6-dev-x32 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6-dev-x32 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6-i386 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6-i386 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6-s390 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6-s390 2.39-0ubuntu1 | Jan 30, 2024 |
| libc6-x32 · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | libc6-x32 2.39-0ubuntu1 | Jan 30, 2024 |
| locales · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | locales 2.39-0ubuntu1 | Jan 30, 2024 |
| locales-all · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | locales-all 2.39-0ubuntu1 | Jan 30, 2024 |
| nscd · Ubuntu 24.04.5 LTS (noble) | 2.39-0ubuntu1 | nscd 2.39-0ubuntu1 | Jan 30, 2024 |
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