glibc: An off-by-one heap-based buffer overflow was found in the __vsyslog_internal function of the glibc library
CVE-2023-6779 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: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| glibc · Debian 12.15 (bookworm) | 2.36-9+deb12u4 | DEBIAN-CVE-2023-6779 | Jan 31, 2024 |
| glibc · Debian 13.5 (trixie) | 2.37-15 | DEBIAN-CVE-2023-6779 | Jan 31, 2024 |
| glibc · Debian 14 | 2.37-15 | DEBIAN-CVE-2023-6779 | 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 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.