An update for coreutils is now available for openEuler-22.03-LTS-SP4 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-3389 Final 1.0 1.0 2026-08-13 Initial 2026-08-13 2026-08-13 openEuler SA Tool V1.0 2026-08-13 coreutils security update An update for coreutils is now available for openEuler-22.03-LTS-SP4 These are the GNU core utilities. This package is the combination of the old GNU fileutils, sh-utils, and textutils packages. Security Fix(es): GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop (-t) values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted input, subsequent writes exceed the allocated memory, leading to an out‑of‑bounds heap write. When running GNU coreutils unexpand with attacker-provided large tab stop (-t) arguments, this behavior leads to a crash and potentially achieve a heap write primitive depending on memory layout. This issue has been fixed in the commit b60a159fdc5bfcf9988d3a4cb6f53abe8ad5d35d(CVE-2026-56392) An update for coreutils is now available for openEuler-22.03-LTS-SP4. openEuler Security has rated this update as having a security impact of low. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Low coreutils https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3389 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-56392 https://nvd.nist.gov/vuln/detail/CVE-2026-56392 openEuler-22.03-LTS-SP4 coreutils-9.0-27.oe2203sp4.aarch64.rpm coreutils-debuginfo-9.0-27.oe2203sp4.aarch64.rpm coreutils-debugsource-9.0-27.oe2203sp4.aarch64.rpm coreutils-9.0-27.oe2203sp4.src.rpm coreutils-9.0-27.oe2203sp4.x86_64.rpm coreutils-debuginfo-9.0-27.oe2203sp4.x86_64.rpm coreutils-debugsource-9.0-27.oe2203sp4.x86_64.rpm coreutils-help-9.0-27.oe2203sp4.noarch.rpm GNU coreutils unexpand is vulnerable to a heap-based buffer overflow due to an integer overflow during buffer allocation when processing large tab stop (-t) values. The multiplication used to calculate the allocation size can wrap around, resulting in an undersized buffer. When processing crafted input, subsequent writes exceed the allocated memory, leading to an out‑of‑bounds heap write. When running GNU coreutils unexpand with attacker-provided large tab stop (-t) arguments, this behavior leads to a crash and potentially achieve a heap write primitive depending on memory layout. This issue has been fixed in the commit b60a159fdc5bfcf9988d3a4cb6f53abe8ad5d35d 2026-08-13 CVE-2026-56392 openEuler-22.03-LTS-SP4 Low 1.8 AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N coreutils security update 2026-08-13 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3389