Red Hat Product Errata RHSA-2026:36728 - Security Advisory Issued: 2026-07-08 Updated: 2026-07-08 RHSA-2026:36728 - Security Advisory Overview Updated Packages Synopsis Low: libtasn1 security update Type/Severity Security Advisory: Low Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for libtasn1 is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description A library that provides Abstract Syntax Notation One (ASN.1, as specified by the X.680 ITU-T recommendation) parsing and structures management, and Distinguished Encoding Rules (DER, as per X.690) encoding and decoding functions. Security Fix(es): libtasn1: libtasn1: Denial of Service via stack-based buffer overflow in asn1_expend_octet_string (CVE-2025-13151) 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. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux for x86_64 8 x86_64 Red Hat Enterprise Linux for IBM z Systems 8 s390x Red Hat Enterprise Linux for Power, little endian 8 ppc64le Red Hat Enterprise Linux for ARM 64 8 aarch64 Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64 Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 8.10 aarch64 Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 8.10 ppc64le Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 8.10 s390x Fixes BZ - 2427698 - CVE-2025-13151 libtasn1: libtasn1: Denial of Service via stack-based buffer overflow in asn1_expend_octet_string CVEs CVE-2025-13151 References https://access.redhat.com/security/updates/classification/#low Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux for x86_64 8 SRPM libtasn1-4.13-6.el8_10.src.rpm SHA-256: e2fea474fdbfe714a9ad4256df073ddd47cb1930d2334d6fc3d617406a7c7b6d x86_64 libtasn1-4.13-6.el8_10.i686.rpm SHA-256: 1261d3a63cf77eecab2def5293ff8c2fe7b7f543484fcbf102c3380e04fbac4f libtasn1-4.13-6.el8_10.x86_64.rpm SHA-256: 9cd5042818f4da60bfff2acc2a77ad5f7a21de4bd1db9993ac6ed77d4b6025c3 libtasn1-debuginfo-4.13-6.el8_10.i686.rpm SHA-256: 619b19d82de7b70fbeb345a8da4850d7bdcc2161c873cff70934bca78750217a libtasn1-debuginfo-4.13-6.el8_10.i686.rpm SHA-256: 619b19d82de7b70fbeb345a8da4850d7bdcc2161c873cff70934bca78750217a libtasn1-debuginfo-4.13-6.el8_10.x86_64.rpm SHA-256: 08b38ca0a6a3e8730e2173705f7a21dca7f665748dc7d3ac466df2c75e77ed6e libtasn1-debuginfo-4.13-6.el8_10.x86_64.rpm SHA-256: 08b38ca0a6a3e8730e2173705f7a21dca7f665748dc7d3ac466df2c75e77ed6e libtasn1-debugsource-4.13-6.el8_10.i686.rpm SHA-256: 962281c49300eecda990f051ce3f995b2f1c0ce1bbd4ffcb757d765a55819577 libtasn1-debugsource-4.13-6.el8_10.i686.rpm SHA-256: 962281c49300eecda990f051ce3f995b2f1c0ce1bbd4ffcb757d765a55819577 libtasn1-debugsource-4.13-6.el8_10.x86_64.rpm SHA-256: f3b8247570e1a3ee05a05453d34c6bf662ed944347eb814f2dc434f588d7d4d4 libtasn1-debugsource-4.13-6.el8_10.x86_64.rpm SHA-256: f3b8247570e1a3ee05a05453d34c6bf662ed944347eb814f2dc434f588d7d4d4 libtasn1-devel-4.13-6.el8_10.i686.rpm SHA-256: 032dfa66ad059f1f235a29a325af0307afe179c77ae9c32d8b30e8ccd9225c64 libtasn1-devel-4.13-6.el8_10.x86_64.rpm SHA-256: 86dc4206156ce3e0c6fdab12455822f84bd7472ad4884bb4acf1f4ffedcc3208 libtasn1-tools-4.13-6.el8_10.x86_64.rpm SHA-256: e20b2ab5c162a1a5d0cc5be7f0652bdc048385069ddf12f3c735b9186ba707ba libtasn1-tools-debuginfo-4.13-6.el8_10.i686.rpm SHA-256: 1b3b776b2b772758b47a692e6afc907390c549d2c3aa75a5e9036831f1b654e7 libtasn1-tools-debuginfo-4.13-6.el8_10.i686.rpm SHA-256: 1b3b776b2b772758b47a692e6afc907390c549d2c3aa75a5e9036831f1b654e7 libtasn1-tools-debuginfo-4.13-6.el8_10.x86_64.rpm SHA-256: 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