CVE-2026-45446
Fixed in a distro release EPSS <1%CVSS 4.8
Issue summary: The implementations of AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) mishandle the authentication of AAD (Additional Authenticated Data) with an empty ciphertext allowing a forgery of such messages. Impact summary: An attacker can forge empty messages with arbitrary AAD to the victim's application using these ciphers. AES-SIV (RFC 5297) and AES-GCM-SIV (RFC 8452) are nonce-misuse-resistant AEAD modes: they accept a key, nonce, optional AAD (bytes that are authenticated but not encrypted), and plaintext, and produces ciphertext plus a 16-byte tag. On decrypt, `EVP_DecryptFinal_ex()` is documented to return success only if the tag is verified succesfully. In OpenSSL's provider implementation of these ciphers, the expected tag is computed only when decryption function is invoked with non-empty data. If the caller supplies AAD and then calls `EVP_DecryptFinal_ex()` without invocation of the ciphertext update, which can happen when the received ciphertext length is zero, the tag is never recalculated and still holds its all-zeros value. When AES-GCM-SIV is used, an attacker who sends arbitrary AAD, empty ciphertext, and all-zeros tag passes authentication under any key they do not know, single-shot. When AES-SIV is used, for mounting the attack it's necessary for the application to reuse the decryption context without resetting the key. AES-SIV is implemented since OpenSSL 3.0. AES-GCM-SIV is implemented since OpenSSL 3.2. No protocols implemented in OpenSSL itself (TLS/CMS/PKCS7/HPKE/QUIC) support either AES-GCM-SIV or AES-SIV. To mount an attack, the applications must implement their own protocol and use the EVP interface. Also they must skip the ciphertext update when a message with an empty ciphertext arrives. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as these algorithms are not FIPS approved and 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 3.21 | openssl | 3.3.7-r1 |
| 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-3 | 3.0.8-150400.4.87.1 |
| 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-3 | 3.0.8-150500.5.66.1 |
| 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-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise Micro 5.4 | openssl-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | openssl-3 | 3.2.3-150700.5.36.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | openssl-3 | 3.0.8-150400.4.87.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | openssl-3 | 3.0.8-150500.5.66.1 |
| 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 for SAP Applications 15 SP4 | openssl-3 | 3.0.8-150400.4.87.1 |
| 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-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 | 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 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 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 |
| 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 |