Heap-based Buffer Overflow in GNU coreutils
CVE-2026-56392 is fixed in 3 products on 1 platform, first by RHSA-2026:67886, released July 24, 2026. It is not reported as exploited. Patch Radar priority: Routine.
The coreutils packages contain the GNU Core Utilities and represent a combination of the previously used GNU fileutils, sh-utils, and textutils packages. Bug Fix(es) and Enhancement(s): * Fix execution of the downstream tests in coreutils-df-direct.patch and coreutils-i18n.patch [rhel-8.10.z] (JIRA:RHEL-151533) * unexpand: stack overflow with large tabsizes [rhel-8.10.z] (JIRA:RHEL-182699)
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| coreutils · RHEL 10 | 9.5-8.el10_2.1 | RHSA-2026:67886 | Jul 24, 2026 |
| coreutils · RHEL 8 | 0:8.30-20.el8_10 | RHBA-2026:47115 | Jul 31, 2026 |
| coreutils · RHEL 9 | 0:8.32-41.el9_8.1 | RHSA-2026:66403 | Sep 13, 2026 |
| coreutils · almalinux 10 | 9.5-8.el10_2.1 | ALSA-2026:67886 | Sep 16, 2026 |
| coreutils · almalinux 9 | 8.32-41.el9_8.1 | ALSA-2026:66403 | Sep 10, 2026 |
| coreutils · ol 10 | 0:9.5-8.0.1.el10_2.1 | ELSA-2026-67886 | Sep 16, 2026 |
| coreutils · ol 9 | 0:8.32-41.0.1.el9_8.1 | ELSA-2026-66403-0 | Sep 10, 2026 |
| coreutils · rocky 10 | 0:9.5-8.el10_2.1 | RLSA-2026:67886 | Sep 17, 2026 |
| coreutils · rocky 9 | 0:8.32-41.el9_8.1 | RLSA-2026:66403 | Sep 11, 2026 |
| coreutils-common · RHEL 8 | 0:8.30-20.el8_10 | RHBA-2026:47115 | Jul 31, 2026 |
| coreutils-common · almalinux 10 | 9.5-8.el10_2.1 | ALSA-2026:67886 | Sep 16, 2026 |
| coreutils-common · almalinux 9 | 8.32-41.el9_8.1 | ALSA-2026:66403 | Sep 10, 2026 |
| coreutils-common · ol 10 | 0:9.5-8.0.1.el10_2.1 | ELSA-2026-67886 | Sep 16, 2026 |
| coreutils-common · ol 9 | 0:8.32-41.0.1.el9_8.1 | ELSA-2026-66403-0 | Sep 10, 2026 |
| coreutils-single · RHEL 8 | 0:8.30-20.el8_10 | RHBA-2026:47115 | Jul 31, 2026 |
| coreutils-single · RHEL 9 | 0:8.32-41.el9_8.1 | RHSA-2026:66403 | Sep 13, 2026 |
| coreutils-single · almalinux 10 | 9.5-8.el10_2.1 | ALSA-2026:67886 | Sep 16, 2026 |
| coreutils-single · almalinux 9 | 8.32-41.el9_8.1 | ALSA-2026:66403 | Sep 10, 2026 |
| coreutils-single · ol 10 | 0:9.5-8.0.1.el10_2.1 | ELSA-2026-67886 | Sep 16, 2026 |
| coreutils-single · ol 9 | 0:8.32-41.0.1.el9_8.1 | ELSA-2026-66403-0 | Sep 10, 2026 |
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