{"schema_version":"1.7.2","id":"OESA-2026-3575","modified":"2026-08-30T04:17:56Z","published":"2026-08-30T04:17:56Z","upstream":["CVE-2026-71225"],"summary":"libkcapi security update","details":"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.\r\n\r\nSecurity Fix(es):\n\nA 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)","affected":[{"package":{"ecosystem":"openEuler:22.03-LTS-SP4","name":"libkcapi","purl":"pkg:rpm/openEuler/libkcapi&distro=openEuler-22.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.1-10.oe2203sp4"}]}],"ecosystem_specific":{"aarch64":["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"],"noarch":["libkcapi-help-1.3.1-10.oe2203sp4.noarch.rpm"],"src":["libkcapi-1.3.1-10.oe2203sp4.src.rpm"],"x86_64":["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"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP1","name":"libkcapi","purl":"pkg:rpm/openEuler/libkcapi&distro=openEuler-24.03-LTS-SP1"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-11.oe2403sp1"}]}],"ecosystem_specific":{"aarch64":["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"],"noarch":["libkcapi-help-1.4.0-11.oe2403sp1.noarch.rpm"],"src":["libkcapi-1.4.0-11.oe2403sp1.src.rpm"],"x86_64":["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"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP3","name":"libkcapi","purl":"pkg:rpm/openEuler/libkcapi&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-11.oe2403sp3"}]}],"ecosystem_specific":{"aarch64":["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"],"noarch":["libkcapi-help-1.4.0-11.oe2403sp3.noarch.rpm"],"src":["libkcapi-1.4.0-11.oe2403sp3.src.rpm"],"x86_64":["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"]}},{"package":{"ecosystem":"openEuler:24.03-LTS-SP4","name":"libkcapi","purl":"pkg:rpm/openEuler/libkcapi&distro=openEuler-24.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.0-11.oe2403sp4"}]}],"ecosystem_specific":{"aarch64":["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"],"noarch":["libkcapi-help-1.4.0-11.oe2403sp4.noarch.rpm"],"src":["libkcapi-1.4.0-11.oe2403sp4.src.rpm"],"x86_64":["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"]}},{"package":{"ecosystem":"openEuler:20.03-LTS-SP4","name":"libkcapi","purl":"pkg:rpm/openEuler/libkcapi&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-11.oe2003sp4"}]}],"ecosystem_specific":{"aarch64":["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"],"noarch":["libkcapi-help-1.2.0-11.oe2003sp4.noarch.rpm"],"src":["libkcapi-1.2.0-11.oe2003sp4.src.rpm"],"x86_64":["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"]}}],"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-3575"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-71225"}],"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"}],"database_specific":{"severity":"Medium"}}