CVE-2026-34180
Fixed in a distro release EPSS 1%CVSS 7.5
Issue summary: Parsing a crafted DER-encoded ASN.1 structure with a primitive element whose content exceeds 2 gigabytes in length may cause a heap buffer over-read on 64-bit Unix and Unix-like platforms. Impact summary: The heap buffer over-read may crash the application (Denial of Service) or to load into the decoded ASN.1 object contents of memory beyond the end of the input buffer. More typically such ASN.1 elements would instead be truncated. An integer truncation in OpenSSL's ASN.1 decoder causes the content length of an ASN.1 primitive element to be mishandled when it exceeds 2 gigabytes. In the worst case the truncated length is treated as a request to scan the binary content for a terminating zero byte, possibly causing OpenSSL to read either less than or beyond the end of the allocated buffer. Applications that pass attacker-supplied data to d2i_X509(), d2i_PKCS7(), or any other d2i_* decoding function are affected. OpenSSL's own command-line tools are not vulnerable, as data read through the BIO layer is checked before it reaches the affected code. The issue only affects 64-bit Unix and Unix-like platforms; 32-bit platforms and 64-bit Windows are not affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4 and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.
Products: OpenSSL
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 10 | openssl | 1:3.5.5-4.el10_2.alma.1 |
| AlmaLinux 10 | openssl-devel | 1:3.5.5-4.el10_2.alma.1 |
| AlmaLinux 10 | openssl-libs | 1:3.5.5-4.el10_2.alma.1 |
| AlmaLinux 10 | openssl-perl | 1:3.5.5-4.el10_2.alma.1 |
| AlmaLinux 9 | openssl | 1:3.5.5-4.el9_8 |
| AlmaLinux 9 | openssl-devel | 1:3.5.5-4.el9_8 |
| AlmaLinux 9 | openssl-libs | 1:3.5.5-4.el9_8 |
| AlmaLinux 9 | openssl-perl | 1:3.5.5-4.el9_8 |
| Alpine 3.22 | openssl | 3.5.7-r0 |
| Alpine 3.23 | openssl | 3.5.7-r0 |
| Alpine 3.24 | openssl | 3.5.7-r0 |
| Chainguard | libcrypto3 | 3.6.3-r0 |
| Chainguard | libcrypto3-2.34 | 3.6.3-r0 |
| Chainguard | openssl | 3.6.3-r0 |
| Chainguard | openssl-provider-fips-3.4.0 | 0 |
| Chainguard | openssl-provider-fips-3.4.0-dbg | 0 |
| Chainguard | openssl-provider-fips-3.6.0 | 0 |
| Chainguard | openssl-provider-fips-3.6.0-dbg | 0 |
| Debian 12 | openssl | 3.0.20-1~deb12u2 |
| Debian 13 | openssl | 3.5.6-1~deb13u2 |
| Debian 14 | openssl | 3.6.3-1 |
| Red Hat Enterprise Linux 10.2 | openssl | 1:3.5.5-4.el10_2 |
| Red Hat Enterprise Linux 10.2 | openssl-debuginfo | 1:3.5.5-4.el10_2 |
| Red Hat Enterprise Linux 10.2 | openssl-debugsource | 1:3.5.5-4.el10_2 |
| Red Hat Enterprise Linux 10.2 | openssl-devel | 1:3.5.5-4.el10_2 |
| Red Hat Enterprise Linux 10.2 | openssl-libs | 1:3.5.5-4.el10_2 |
| Red Hat Enterprise Linux 10.2 | openssl-libs-debuginfo | 1:3.5.5-4.el10_2 |
| Red Hat Enterprise Linux 10.2 | openssl-perl | 1:3.5.5-4.el10_2 |
| Red Hat Enterprise Linux 9 | openssl | 1:3.5.5-4.el9_8 |
| Red Hat Enterprise Linux 9 | openssl-debuginfo | 1:3.5.5-4.el9_8 |
| Red Hat Enterprise Linux 9 | openssl-debugsource | 1:3.5.5-4.el9_8 |
| Red Hat Enterprise Linux 9 | openssl-devel | 1:3.5.5-4.el9_8 |
| Red Hat Enterprise Linux 9 | openssl-libs | 1:3.5.5-4.el9_8 |
| Red Hat Enterprise Linux 9 | openssl-libs-debuginfo | 1:3.5.5-4.el9_8 |
| Red Hat Enterprise Linux 9 | openssl-perl | 1:3.5.5-4.el9_8 |
| Red Hat hummingbird 1 | bootupd | 0:0.3.2-1.hum1 |
| Red Hat hummingbird 1 | chunkah | 0:0.6.0-3.hum1 |
| Red Hat hummingbird 1 | openssl | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl-config-fips | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl-devel | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl-devel-engine | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl-fips-provider-upstream | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl-libs | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl-perl | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl3 | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl3-devel | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl3-devel-engine | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | openssl3-libs | 0:3.5.8-0.1.hum1 |
| Red Hat hummingbird 1 | python-cryptography | 0:50.0.0-1.hum1 |
| Red Hat hummingbird 1 | python3-cryptography | 0:50.0.0-1.hum1 |
| Red Hat hummingbird 1 | ruby3.3 | 0:3.3.10-23.6.hum1 |
| Red Hat hummingbird 1 | ruby3.3-bundled-gems | 0:3.3.10-23.6.hum1 |
| Red Hat hummingbird 1 | ruby3.3-default-gems | 0:3.3.10-23.6.hum1 |
| Red Hat hummingbird 1 | ruby3.3-devel | 0:3.3.10-23.6.hum1 |
| Red Hat hummingbird 1 | ruby3.3-doc | 0:3.3.10-23.6.hum1 |
| Red Hat hummingbird 1 | ruby3.3-libs | 0:3.3.10-23.6.hum1 |
| Red Hat hummingbird 1 | ruby3.4 | 0:3.4.10-31.7.hum1 |
| Red Hat hummingbird 1 | ruby3.4-bundled-gems | 0:3.4.10-31.7.hum1 |
| Red Hat hummingbird 1 | ruby3.4-default-gems | 0:3.4.10-31.7.hum1 |
| Red Hat hummingbird 1 | ruby3.4-devel | 0:3.4.10-31.7.hum1 |
| Red Hat hummingbird 1 | ruby3.4-doc | 0:3.4.10-31.7.hum1 |
| Red Hat hummingbird 1 | ruby3.4-libs | 0:3.4.10-31.7.hum1 |
| Red Hat hummingbird 1 | ruby4.0 | 0:4.0.6-37.3.hum1 |
| Red Hat hummingbird 1 | ruby4.0-bundled-gems | 0:4.0.6-37.3.hum1 |
| Red Hat hummingbird 1 | ruby4.0-default-gems | 0:4.0.6-37.3.hum1 |
| Red Hat hummingbird 1 | ruby4.0-devel | 0:4.0.6-37.3.hum1 |
| Red Hat hummingbird 1 | ruby4.0-doc | 0:4.0.6-37.3.hum1 |
| Red Hat hummingbird 1 | ruby4.0-libs | 0:4.0.6-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-bigdecimal | 0:3.1.5-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-bundler | 0:2.5.22-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-devel | 0:3.5.22-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-io-console | 0:0.7.1-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-irb | 0:1.13.1-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-json | 0:2.7.2-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-minitest | 0:5.20.0-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-power_assert | 0:2.0.3-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-psych | 0:5.1.2-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-racc | 0:1.7.3-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-rake | 0:13.1.0-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-rbs | 0:3.4.0-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-rdoc | 0:6.6.3.1-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-rexml | 0:3.4.4-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-rss | 0:0.3.1-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-rubygems | 0:3.5.22-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-test-unit | 0:3.6.1-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem3.3-typeprof | 0:0.21.9-23.6.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-bigdecimal | 0:4.0.1-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-bundler | 0:4.0.16-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-devel | 0:4.0.16-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-io-console | 0:0.8.2-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-irb | 0:1.16.0-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-json | 0:2.18.0-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-minitest | 0:6.0.0-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-power_assert | 0:3.0.1-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-psych | 0:5.3.1-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-racc | 0:1.8.1-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-rake | 0:13.3.1-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-rbs | 0:3.10.0-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-rdoc | 0:7.0.4-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-rexml | 0:3.4.4-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-rss | 0:0.3.2-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-rubygems | 0:4.0.16-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-test-unit | 0:3.7.5-37.3.hum1 |
| Red Hat hummingbird 1 | rubygem4.0-typeprof | 0:0.31.1-37.3.hum1 |
| Red Hat hummingbird 1 | rust-bootupd | 0:0.3.2-1.hum1 |
| Rocky Linux 10 | openssl | 1:3.5.5-4.el10_2 |
| Rocky Linux 9 | openssl | 1:3.5.5-4.el9_8 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | openssl-1_1 | 1.1.1l-150400.7.96.2 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | openssl-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | openssl-1_1 | 1.1.1l-150400.7.96.2 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | openssl-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | openssl-1_1 | 1.1.1l-150500.17.57.2 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | openssl-3 | 3.0.8-150500.5.66.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | openssl-1_1 | 1.1.1l-150500.17.57.2 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | openssl-3 | 3.0.8-150500.5.66.1 |
| SUSE Linux Enterprise Micro 5.3 | openssl-1_1 | 1.1.1l-150400.7.96.2 |
| SUSE Linux Enterprise Micro 5.3 | openssl-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise Micro 5.4 | openssl-1_1 | 1.1.1l-150400.7.96.2 |
| SUSE Linux Enterprise Micro 5.4 | openssl-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise Micro 5.5 | openssl-1_1 | 1.1.1l-150500.17.57.2 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | openssl-1_1 | 1.1.1w-150700.11.22.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | openssl-3 | 3.2.3-150700.5.36.1 |
| SUSE Linux Enterprise Module for Development Tools 15 SP7 | openssl-1_1 | 1.1.1w-150700.11.22.1 |
| SUSE Linux Enterprise Module for Legacy 15 SP7 | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise Module for Legacy 15 SP7 | openssl-1_1 | 1.1.1w-150700.11.22.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | openssl-1_0_0 | 1.0.2p-3.109.1 |
| SUSE Linux Enterprise Server 12 SP5-LTSS | openssl-1_1 | 1.1.1d-2.131.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | openssl-1_1 | 1.1.1l-150400.7.96.2 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | openssl-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | openssl-1_1 | 1.1.1l-150500.17.57.2 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | openssl-3 | 3.0.8-150500.5.66.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | openssl-1_1 | 1.1.1w-150600.5.32.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | openssl-3 | 3.1.4-150600.5.53.1 |
| SUSE Linux Enterprise Server 16.0 | openssl-3 | 3.5.0-160000.8.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | openssl-1_0_0 | 1.0.2p-3.109.1 |
| SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 | openssl-1_1 | 1.1.1d-2.131.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | openssl-1_1 | 1.1.1l-150400.7.96.2 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | openssl-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | openssl-1_1 | 1.1.1l-150500.17.57.2 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | openssl-3 | 3.0.8-150500.5.66.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | openssl-1_0_0 | 1.0.2p-150000.3.108.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | openssl-1_1 | 1.1.1w-150600.5.32.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | openssl-3 | 3.1.4-150600.5.53.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | openssl-3 | 3.5.0-160000.8.1 |
| SUSE Linux Micro 6.0 | openssl-3 | 3.1.4-14.1 |
| SUSE Linux Micro 6.1 | openssl-3 | 3.1.4-slfo.1.1_10.1 |
| SUSE Linux Micro 6.2 | openssl-3 | 3.5.0-160000.8.1 |
| Ubuntu 22.04 LTS | edk2 | no fix |
| Ubuntu 22.04 LTS | openssl | 3.0.2-0ubuntu1.25 |
| Ubuntu 24.04 LTS | edk2 | no fix |
| Ubuntu 24.04 LTS | openssl | 3.0.13-0ubuntu3.11 |
| Ubuntu 25.10 | edk2 | no fix |
| Ubuntu 25.10 | openssl | 3.5.3-1ubuntu3.4 |
| Ubuntu 26.04 LTS | edk2 | no fix |
| Ubuntu 26.04 LTS | edk2-hwe | no fix |
| Ubuntu 26.04 LTS | openssl | 3.5.5-1ubuntu3.2 |
| Ubuntu 26.10 | edk2 | no fix |
| Ubuntu 26.10 | edk2-hwe | no fix |
| Ubuntu Pro 14.04 LTS | openssl | 1.0.1f-1ubuntu2.27+esm14 |
| Ubuntu Pro 16.04 LTS | edk2 | no fix |
| Ubuntu Pro 16.04 LTS | nodejs | no fix |
| Ubuntu Pro 16.04 LTS | openssl | 1.0.2g-1ubuntu4.20+esm16 |
| Ubuntu Pro 18.04 LTS | edk2 | no fix |
| Ubuntu Pro 18.04 LTS | nodejs | no fix |
| Ubuntu Pro 18.04 LTS | openssl | 1.1.1-1ubuntu2.1~18.04.23+esm9 |
| Ubuntu Pro 18.04 LTS | openssl1.0 | 1.0.2n-1ubuntu5.13+esm5 |
| Ubuntu Pro 20.04 LTS | edk2 | no fix |
| Ubuntu Pro 20.04 LTS | openssl | 1.1.1f-1ubuntu2.24+esm4 |
| Ubuntu Pro 22.04 LTS | nodejs | no fix |
| Ubuntu Pro FIPS-preview 22.04 LTS | openssl | no fix |
| Ubuntu Pro FIPS-preview 22.04 LTS | openssl-fips | no fix |
| Ubuntu Pro FIPS-updates 16.04 LTS | openssl | no fix |
| Ubuntu Pro FIPS-updates 18.04 LTS | openssl | 1.1.1-1ubuntu2.fips.2.1~18.04.23.9 |
| Ubuntu Pro FIPS-updates 20.04 LTS | openssl | 1.1.1f-1ubuntu2.fips.24.4 |
| Ubuntu Pro FIPS-updates 22.04 LTS | openssl | 3.0.2-0ubuntu1.25+Fips1 |
| Ubuntu Pro FIPS-updates 22.04 LTS | openssl-fips | no fix |
| Ubuntu Pro FIPS-updates 24.04 LTS | openssl-fips | 3.0.13-0ubuntu3.12+Fips1 |
| Ubuntu Pro FIPS 16.04 LTS | openssl | no fix |
| Ubuntu Pro FIPS 18.04 LTS | openssl | no fix |
| Ubuntu Pro FIPS 20.04 LTS | openssl | no fix |
| Wolfi | libcrypto3 | 3.6.3-r0 |
| Wolfi | openssl | 3.6.3-r0 |
| openSUSE Leap 16.0 | openssl-3 | 3.5.0-160000.8.1 |
| openSUSE Tumbleweed | openssl-3 | 3.5.3-6.1 |