An update for libkcapi is now available for openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3,openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-3575 Final 1.0 1.0 2026-08-30 Initial 2026-08-30 2026-08-30 openEuler SA Tool V1.0 2026-08-30 libkcapi security update An update for libkcapi is now available for openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3,openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4 The Linux kernel exports a Netlink interface of type AF_ALG to allow user space to utilize the kernel crypto API. libkcapi uses this Netlink interface and exports easy to use APIs so that a developer does not need to consider the low-level Netlink interface handling. The library does not implement any cipher algorithms. All consumer requests are sent to the kernel for processing. Results from the kernel crypto API are returned to the consumer via the library API. Security Fix(es): A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes such as Counter (CTR) or Cipher Block Chaining (CBC), the library improperly reuses the Initialization Vector (IV) for each internal data chunk. A remote attacker could potentially exploit this by making an application that uses libkcapi process specially crafted large inputs. This can lead to a significant weakening of data confidentiality, as the repeated IV use can expose relationships in encrypted plaintext, and may also affect data integrity by causing incorrect cryptographic processing.(CVE-2026-71225) An update for libkcapi is now available for openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3,openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4. openEuler Security has rated this update as having a security impact of medium. 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. Medium libkcapi https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3575 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-71225 https://nvd.nist.gov/vuln/detail/CVE-2026-71225 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 libkcapi-1.3.1-10.oe2203sp4.x86_64.rpm libkcapi-debuginfo-1.3.1-10.oe2203sp4.x86_64.rpm libkcapi-debugsource-1.3.1-10.oe2203sp4.x86_64.rpm libkcapi-devel-1.3.1-10.oe2203sp4.x86_64.rpm libkcapi-tests-1.3.1-10.oe2203sp4.x86_64.rpm libkcapi-1.4.0-11.oe2403sp1.x86_64.rpm libkcapi-debuginfo-1.4.0-11.oe2403sp1.x86_64.rpm libkcapi-debugsource-1.4.0-11.oe2403sp1.x86_64.rpm libkcapi-devel-1.4.0-11.oe2403sp1.x86_64.rpm libkcapi-tests-1.4.0-11.oe2403sp1.x86_64.rpm libkcapi-1.4.0-11.oe2403sp3.x86_64.rpm libkcapi-debuginfo-1.4.0-11.oe2403sp3.x86_64.rpm libkcapi-debugsource-1.4.0-11.oe2403sp3.x86_64.rpm libkcapi-devel-1.4.0-11.oe2403sp3.x86_64.rpm libkcapi-tests-1.4.0-11.oe2403sp3.x86_64.rpm libkcapi-1.4.0-11.oe2403sp4.x86_64.rpm libkcapi-debuginfo-1.4.0-11.oe2403sp4.x86_64.rpm libkcapi-debugsource-1.4.0-11.oe2403sp4.x86_64.rpm libkcapi-devel-1.4.0-11.oe2403sp4.x86_64.rpm libkcapi-tests-1.4.0-11.oe2403sp4.x86_64.rpm libkcapi-1.2.0-11.oe2003sp4.x86_64.rpm libkcapi-debuginfo-1.2.0-11.oe2003sp4.x86_64.rpm libkcapi-debugsource-1.2.0-11.oe2003sp4.x86_64.rpm libkcapi-devel-1.2.0-11.oe2003sp4.x86_64.rpm libkcapi-tests-1.2.0-11.oe2003sp4.x86_64.rpm libkcapi-help-1.3.1-10.oe2203sp4.noarch.rpm libkcapi-help-1.4.0-11.oe2403sp1.noarch.rpm libkcapi-help-1.4.0-11.oe2403sp3.noarch.rpm libkcapi-help-1.4.0-11.oe2403sp4.noarch.rpm libkcapi-help-1.2.0-11.oe2003sp4.noarch.rpm libkcapi-1.3.1-10.oe2203sp4.aarch64.rpm libkcapi-debuginfo-1.3.1-10.oe2203sp4.aarch64.rpm libkcapi-debugsource-1.3.1-10.oe2203sp4.aarch64.rpm libkcapi-devel-1.3.1-10.oe2203sp4.aarch64.rpm libkcapi-tests-1.3.1-10.oe2203sp4.aarch64.rpm libkcapi-1.4.0-11.oe2403sp1.aarch64.rpm libkcapi-debuginfo-1.4.0-11.oe2403sp1.aarch64.rpm libkcapi-debugsource-1.4.0-11.oe2403sp1.aarch64.rpm libkcapi-devel-1.4.0-11.oe2403sp1.aarch64.rpm libkcapi-tests-1.4.0-11.oe2403sp1.aarch64.rpm libkcapi-1.4.0-11.oe2403sp3.aarch64.rpm libkcapi-debuginfo-1.4.0-11.oe2403sp3.aarch64.rpm libkcapi-debugsource-1.4.0-11.oe2403sp3.aarch64.rpm libkcapi-devel-1.4.0-11.oe2403sp3.aarch64.rpm libkcapi-tests-1.4.0-11.oe2403sp3.aarch64.rpm libkcapi-1.4.0-11.oe2403sp4.aarch64.rpm libkcapi-debuginfo-1.4.0-11.oe2403sp4.aarch64.rpm libkcapi-debugsource-1.4.0-11.oe2403sp4.aarch64.rpm libkcapi-devel-1.4.0-11.oe2403sp4.aarch64.rpm libkcapi-tests-1.4.0-11.oe2403sp4.aarch64.rpm libkcapi-1.2.0-11.oe2003sp4.aarch64.rpm libkcapi-debuginfo-1.2.0-11.oe2003sp4.aarch64.rpm libkcapi-debugsource-1.2.0-11.oe2003sp4.aarch64.rpm libkcapi-devel-1.2.0-11.oe2003sp4.aarch64.rpm libkcapi-tests-1.2.0-11.oe2003sp4.aarch64.rpm libkcapi-1.3.1-10.oe2203sp4.src.rpm libkcapi-1.4.0-11.oe2403sp1.src.rpm libkcapi-1.4.0-11.oe2403sp3.src.rpm libkcapi-1.4.0-11.oe2403sp4.src.rpm libkcapi-1.2.0-11.oe2003sp4.src.rpm A flaw was found in libkcapi. When performing one-shot symmetric cipher operations on large inputs (over 64 KiB) in stateful modes such as Counter (CTR) or Cipher Block Chaining (CBC), the library improperly reuses the Initialization Vector (IV) for each internal data chunk. A remote attacker could potentially exploit this by making an application that uses libkcapi process specially crafted large inputs. This can lead to a significant weakening of data confidentiality, as the repeated IV use can expose relationships in encrypted plaintext, and may also affect data integrity by causing incorrect cryptographic processing. 2026-08-30 CVE-2026-71225 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 Medium 6.5 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N libkcapi security update 2026-08-30 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3575