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RLSA-2026:67886

Security Mirrored from RHSA-2026:67886
Issued at: 2026-09-17
Updated at: 2026-09-18

Advisory content derived from Red Hat RHSA-2026:67886, © Red Hat, Inc., used under CC BY 4.0, with modifications.

Synopsis

Moderate: coreutils security update



Description

The coreutils packages contain the GNU Core Utilities and represent a combination of the previously used GNU fileutils, sh-utils, and textutils packages.

Security Fix(es):

* coreutils: GNU coreutils uniq: Denial of Service and information disclosure via out-of-bounds read with multibyte input (CVE-2026-56391)

* coreutils: GNU coreutils unexpand: Denial of Service via crafted tab stop values (CVE-2026-56392)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.



Affected products

Rocky Linux 10 aarch64 Rocky Linux 10 ppc64le Rocky Linux 10 riscv64 Rocky Linux 10 s390x Rocky Linux 10 x86_64

Fixes

2506691 2506694

CVEs

CVE-2026-56391 CVE-2026-56392

Affected packages

Rocky Linux 10 s390x - BaseOS

coreutils-single-0:9.5-8.el10_2.1.s390x.rpm coreutils-0:9.5-8.el10_2.1.src.rpm coreutils-debuginfo-0:9.5-8.el10_2.1.s390x.rpm coreutils-single-debuginfo-0:9.5-8.el10_2.1.s390x.rpm coreutils-debugsource-0:9.5-8.el10_2.1.s390x.rpm coreutils-common-0:9.5-8.el10_2.1.s390x.rpm coreutils-0:9.5-8.el10_2.1.s390x.rpm

Rocky Linux 10 aarch64 - BaseOS

coreutils-single-debuginfo-0:9.5-8.el10_2.1.aarch64.rpm coreutils-0:9.5-8.el10_2.1.src.rpm coreutils-common-0:9.5-8.el10_2.1.aarch64.rpm coreutils-debugsource-0:9.5-8.el10_2.1.aarch64.rpm coreutils-0:9.5-8.el10_2.1.aarch64.rpm coreutils-single-0:9.5-8.el10_2.1.aarch64.rpm coreutils-debuginfo-0:9.5-8.el10_2.1.aarch64.rpm

Rocky Linux 10 ppc64le - BaseOS

coreutils-debugsource-0:9.5-8.el10_2.1.ppc64le.rpm coreutils-0:9.5-8.el10_2.1.src.rpm coreutils-common-0:9.5-8.el10_2.1.ppc64le.rpm coreutils-single-debuginfo-0:9.5-8.el10_2.1.ppc64le.rpm coreutils-single-0:9.5-8.el10_2.1.ppc64le.rpm coreutils-0:9.5-8.el10_2.1.ppc64le.rpm coreutils-debuginfo-0:9.5-8.el10_2.1.ppc64le.rpm

Rocky Linux 10 riscv64 - BaseOS

coreutils-0:9.5-8.el10_2.1.src.rpm

Rocky Linux 10 x86_64 - BaseOS

coreutils-0:9.5-8.el10_2.1.src.rpm coreutils-0:9.5-8.el10_2.1.x86_64.rpm coreutils-debuginfo-0:9.5-8.el10_2.1.x86_64.rpm coreutils-single-debuginfo-0:9.5-8.el10_2.1.x86_64.rpm coreutils-common-0:9.5-8.el10_2.1.x86_64.rpm coreutils-single-0:9.5-8.el10_2.1.x86_64.rpm coreutils-debugsource-0:9.5-8.el10_2.1.x86_64.rpm