Binutils: out-of-bounds read in xcoff relocation processing in gnu binutils bfd library
CVE-2026-4647 is fixed in 12 products on 1 platform, first by DEBIAN-CVE-2026-4647, released March 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.
A flaw was found in the GNU Binutils BFD library, a widely used component for handling binary files such as object files and executables. The issue occurs when processing specially crafted XCOFF object files, where a relocation type value is not properly validated before being used. This can cause the program to read memory outside of intended bounds. As a result, affected tools may crash or expose unintended memory contents, leading to denial-of-service or limited information disclosure risks.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| binutils · Debian 14 | 2.47-1 | DEBIAN-CVE-2026-4647 | Mar 23, 2026 |
| mingw-binutils · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| mingw-binutils-debuginfo · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| mingw-binutils-debugsource · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| mingw-binutils-generic · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| mingw-binutils-generic-debuginfo · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| mingw32-binutils · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| mingw32-binutils-debuginfo · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| mingw64-binutils · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| mingw64-binutils-debuginfo · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| ucrt64-binutils · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
| ucrt64-binutils-debuginfo · Fedora 43 | 2.45.1-2.fc43 | FEDORA-2026-9174E6EA37 | Mar 27, 2026 |
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