An update for libkcapi is now available for openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-3440 Final 1.0 1.0 2026-08-20 Initial 2026-08-20 2026-08-20 openEuler SA Tool V1.0 2026-08-20 libkcapi security update An update for libkcapi is now available for openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3 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): Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers.(CVE-2026-71226) A flaw was found in libkcapi. A local attacker can influence an application that uses the Asynchronous Input/Output (AIO) interface. By reusing an AIO-enabled handle after a prior completion error, the _kcapi_aio_read_all() function can enter a non-terminating wait loop. This can lead to a persistent denial of service, making the affected application or thread unresponsive.(CVE-2026-71227) An update for libkcapi is now available for openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3. openEuler Security has rated this update as having a security impact of high. 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. High libkcapi https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3440 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-71226 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-71227 https://nvd.nist.gov/vuln/detail/CVE-2026-71226 https://nvd.nist.gov/vuln/detail/CVE-2026-71227 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 libkcapi-1.4.0-10.oe2403sp4.aarch64.rpm libkcapi-debuginfo-1.4.0-10.oe2403sp4.aarch64.rpm libkcapi-debugsource-1.4.0-10.oe2403sp4.aarch64.rpm libkcapi-devel-1.4.0-10.oe2403sp4.aarch64.rpm libkcapi-tests-1.4.0-10.oe2403sp4.aarch64.rpm libkcapi-1.2.0-10.oe2003sp4.aarch64.rpm libkcapi-debuginfo-1.2.0-10.oe2003sp4.aarch64.rpm libkcapi-debugsource-1.2.0-10.oe2003sp4.aarch64.rpm libkcapi-devel-1.2.0-10.oe2003sp4.aarch64.rpm libkcapi-tests-1.2.0-10.oe2003sp4.aarch64.rpm libkcapi-1.3.1-9.oe2203sp4.aarch64.rpm libkcapi-debuginfo-1.3.1-9.oe2203sp4.aarch64.rpm libkcapi-debugsource-1.3.1-9.oe2203sp4.aarch64.rpm libkcapi-devel-1.3.1-9.oe2203sp4.aarch64.rpm libkcapi-tests-1.3.1-9.oe2203sp4.aarch64.rpm libkcapi-1.4.0-10.oe2403sp1.aarch64.rpm libkcapi-debuginfo-1.4.0-10.oe2403sp1.aarch64.rpm libkcapi-debugsource-1.4.0-10.oe2403sp1.aarch64.rpm libkcapi-devel-1.4.0-10.oe2403sp1.aarch64.rpm libkcapi-tests-1.4.0-10.oe2403sp1.aarch64.rpm libkcapi-1.4.0-10.oe2403sp3.aarch64.rpm libkcapi-debuginfo-1.4.0-10.oe2403sp3.aarch64.rpm libkcapi-debugsource-1.4.0-10.oe2403sp3.aarch64.rpm libkcapi-devel-1.4.0-10.oe2403sp3.aarch64.rpm libkcapi-tests-1.4.0-10.oe2403sp3.aarch64.rpm libkcapi-1.4.0-10.oe2403sp4.src.rpm libkcapi-1.2.0-10.oe2003sp4.src.rpm libkcapi-1.3.1-9.oe2203sp4.src.rpm libkcapi-1.4.0-10.oe2403sp1.src.rpm libkcapi-1.4.0-10.oe2403sp3.src.rpm libkcapi-1.4.0-10.oe2403sp4.x86_64.rpm libkcapi-debuginfo-1.4.0-10.oe2403sp4.x86_64.rpm libkcapi-debugsource-1.4.0-10.oe2403sp4.x86_64.rpm libkcapi-devel-1.4.0-10.oe2403sp4.x86_64.rpm libkcapi-tests-1.4.0-10.oe2403sp4.x86_64.rpm libkcapi-1.2.0-10.oe2003sp4.x86_64.rpm libkcapi-debuginfo-1.2.0-10.oe2003sp4.x86_64.rpm libkcapi-debugsource-1.2.0-10.oe2003sp4.x86_64.rpm libkcapi-devel-1.2.0-10.oe2003sp4.x86_64.rpm libkcapi-tests-1.2.0-10.oe2003sp4.x86_64.rpm libkcapi-1.3.1-9.oe2203sp4.x86_64.rpm libkcapi-debuginfo-1.3.1-9.oe2203sp4.x86_64.rpm libkcapi-debugsource-1.3.1-9.oe2203sp4.x86_64.rpm libkcapi-devel-1.3.1-9.oe2203sp4.x86_64.rpm libkcapi-tests-1.3.1-9.oe2203sp4.x86_64.rpm libkcapi-1.4.0-10.oe2403sp1.x86_64.rpm libkcapi-debuginfo-1.4.0-10.oe2403sp1.x86_64.rpm libkcapi-debugsource-1.4.0-10.oe2403sp1.x86_64.rpm libkcapi-devel-1.4.0-10.oe2403sp1.x86_64.rpm libkcapi-tests-1.4.0-10.oe2403sp1.x86_64.rpm libkcapi-1.4.0-10.oe2403sp3.x86_64.rpm libkcapi-debuginfo-1.4.0-10.oe2403sp3.x86_64.rpm libkcapi-debugsource-1.4.0-10.oe2403sp3.x86_64.rpm libkcapi-devel-1.4.0-10.oe2403sp3.x86_64.rpm libkcapi-tests-1.4.0-10.oe2403sp3.x86_64.rpm libkcapi-help-1.4.0-10.oe2403sp4.noarch.rpm libkcapi-help-1.2.0-10.oe2003sp4.noarch.rpm libkcapi-help-1.3.1-9.oe2203sp4.noarch.rpm libkcapi-help-1.4.0-10.oe2403sp1.noarch.rpm libkcapi-help-1.4.0-10.oe2403sp3.noarch.rpm Memory Corruption via Uncanceled AIO Requests on Error: libkcapi's one-shot AIO path can return an error before all submitted IOCBs are drained, allowing later kernel writes into caller-owned output buffers. 2026-08-20 CVE-2026-71226 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 High 7.3 AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H libkcapi security update 2026-08-20 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3440 A flaw was found in libkcapi. A local attacker can influence an application that uses the Asynchronous Input/Output (AIO) interface. By reusing an AIO-enabled handle after a prior completion error, the _kcapi_aio_read_all() function can enter a non-terminating wait loop. This can lead to a persistent denial of service, making the affected application or thread unresponsive. 2026-08-20 CVE-2026-71227 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 Medium 5.1 AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H libkcapi security update 2026-08-20 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3440