Type confusion in OpenSSL - CVE-2026-22796

Vulnerability identifier: #VU122086

CSH Severity: Medium

CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-22796

CWE-ID: CWE-843

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a type confusion error within the PKCS7_digest_from_attributes() function. A remote attacker can pass specially crafted PKCS#7 data to the application, trigger a type confusion error and perform a denial of service attack.

OpenSSL
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server 12 SP5
Debian Linux
SUSE Linux Enterprise Server 12 SP5 LTSS Extended
SUSE Linux Enterprise Server 11 SP4 LTSS EXTREME
SUSE Linux Enterprise Server 11
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 12
SUSE Linux Enterprise Server 12
SUSE Linux Enterprise Server for SAP Applications 12
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Micro
SUSE Linux Micro
IBM i
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for x86_64
FreeBSD
Ubuntu
Legacy Module
Development Tools Module
Basesystem Module
openSUSE Leap
openEuler
Anolis OS
Fedora
SecurityCenter
Netezza Appliance
NativeEdge Orchestrator
IBM Cloud Pak System
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data
IBM Sterling Partner Engagement Manager
IBM MQ
AppDynamics NodeJS Agent
LANTIME Operating System Firmware (LTOS)
Splunk Enterprise
Splunk Universal Forwarder
IBM InfoSphere Information Server
libopenssl1-devel
openssl1-doc
openssl1
libopenssl1_0_0-32bit
libopenssl1_0_0
openssl (Ubuntu package)
openssl-1_0_0-debugsource
libopenssl1_0_0-debuginfo
openssl-1_0_0
libopenssl1_0_0-hmac
libopenssl-1_0_0-devel
openssl-1_0_0-doc
libopenssl1_0_0-hmac-32bit
libopenssl1_0_0-debuginfo-32bit
libopenssl-1_0_0-devel-32bit
openssl-1_0_0-debuginfo
libopenssl10-debuginfo
libopenssl1_0_0-steam
openssl-1_0_0-cavs
libopenssl1_0_0-steam-debuginfo
libopenssl1_0_0-steam-32bit-debuginfo
libopenssl1_0_0-32bit-debuginfo
libopenssl1_0_0-steam-32bit
openssl-1_0_0-cavs-debuginfo
libopenssl10
libopenssl-1_1-devel-32bit
libopenssl1_1-hmac-32bit
libopenssl1_1-debuginfo-32bit
libopenssl1_1-32bit
openssl-1_1-debuginfo
libopenssl1_1-debuginfo
openssl-1_1-debugsource
libopenssl-1_1-devel
libopenssl1_1-hmac
openssl-1_1
libopenssl1_1
openssl-debugsource
openssl-help
openssl-libs
openssl-devel
openssl
openssl-debuginfo
libopenssl1_1-32bit-debuginfo
openssl-1_1-doc
libopenssl1_1-hmac-64bit
libopenssl1_1-64bit
libopenssl-1_1-devel-64bit
libopenssl1_1-64bit-debuginfo
compat-openssl11-devel
compat-openssl11-libs
compat-openssl11
compat-openssl11-debuginfo
compat-openssl11-debugsource
openssl-perl
libopenssl3-debuginfo
openssl-3-debuginfo
openssl-3
libopenssl-3-devel-32bit
libopenssl-3-devel
libopenssl3
libopenssl3-32bit-debuginfo
openssl-3-debugsource
libopenssl3-32bit
openssl-3-doc
libopenssl3-64bit
libopenssl-3-devel-64bit
libopenssl3-64bit-debuginfo
openssl-doc
openssl (Debian package)
libopenssl-3-fips-provider
libopenssl-3-fips-provider-debuginfo
libopenssl-3-fips-provider-32bit-debuginfo
libopenssl-3-fips-provider-32bit
libopenssl-3-fips-provider-64bit-debuginfo
libopenssl-3-fips-provider-64bit
openssl (Red Hat package)
python3-edk2-devel
edk2-ovmf
edk2-help
edk2-aarch64
edk2-devel
edk2-debugsource
edk2-debuginfo
edk2

Install updates from vendor's website.

OpenSSL - addressed in versions 1.0.2zn, 1.1.1ze, 3.0.19, 3.3.6, 3.4.4, 3.5.5, 3.6.1
SecurityCenter - addressed in versions SC202607.1, SC202607.2
Netezza Appliance - update to 1.0.1.0 fp278500
IBM Cloud Pak System - update to 2.3.5.1
IBM Watson Speech Services Cartridge for IBM Cloud Pak for Data - update to 5.3.1 Patch 5
IBM Sterling Partner Engagement Manager - addressed in versions 6.2.3.6, 6.2.4.4
LANTIME Operating System Firmware (LTOS) - update to 7.10.008
Splunk Enterprise - addressed in versions 9.3.11, 9.4.10, 10.0.5, 10.2.2
Splunk Universal Forwarder - addressed in versions 9.3.11, 9.4.10, 10.0.4, 10.2.1
IBM MQ - addressed in versions 9.1.0.34, 9.2.0.41, 9.3.0.37, 9.4.0.20
IBM InfoSphere Information Server - update to 11.7.1.6 Service pack 2
AppDynamics NodeJS Agent - update to 25.12.1
libopenssl1-devel - update to 1.0.1g-58.90.2
openssl1-doc - update to 1.0.1g-58.90.2
openssl1 - update to 1.0.1g-58.90.2
libopenssl1_0_0-32bit - addressed in versions 1.0.1g-58.90.2, 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
libopenssl1_0_0 - addressed in versions 1.0.1g-58.90.2, 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
openssl (Ubuntu package) - addressed in versions 1.0.1f-1ubuntu2.27+esm12, 1.0.2g-1ubuntu4.20+esm14, 1.0.2n-1ubuntu5.13+esm3, 1.1.1f-1ubuntu2.24+esm2, 1.1.1-1ubuntu2.1~18.04.23+esm7, 3.0.2-0ubuntu1.21, 3.0.13-0ubuntu3.7, 3.5.3-1ubuntu3
openssl-1_0_0-debugsource - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
libopenssl1_0_0-debuginfo - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
openssl-1_0_0 - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
libopenssl1_0_0-hmac - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
libopenssl-1_0_0-devel - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
openssl-1_0_0-doc - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
libopenssl1_0_0-hmac-32bit - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
libopenssl1_0_0-debuginfo-32bit - update to 1.0.2p-3.103.1
libopenssl-1_0_0-devel-32bit - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
openssl-1_0_0-debuginfo - addressed in versions 1.0.2p-3.103.1, 1.0.2p-150000.3.102.1
libopenssl10-debuginfo - update to 1.0.2p-150000.3.102.1
libopenssl1_0_0-steam - update to 1.0.2p-150000.3.102.1
openssl-1_0_0-cavs - update to 1.0.2p-150000.3.102.1
libopenssl1_0_0-steam-debuginfo - update to 1.0.2p-150000.3.102.1
libopenssl1_0_0-steam-32bit-debuginfo - update to 1.0.2p-150000.3.102.1
libopenssl1_0_0-32bit-debuginfo - update to 1.0.2p-150000.3.102.1
libopenssl1_0_0-steam-32bit - update to 1.0.2p-150000.3.102.1
openssl-1_0_0-cavs-debuginfo - update to 1.0.2p-150000.3.102.1
libopenssl10 - update to 1.0.2p-150000.3.102.1
libopenssl-1_1-devel-32bit - addressed in versions 1.1.1d-2.122.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1
libopenssl1_1-hmac-32bit - addressed in versions 1.1.1d-2.122.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1
libopenssl1_1-debuginfo-32bit - update to 1.1.1d-2.122.1
libopenssl1_1-32bit - addressed in versions 1.1.1d-2.122.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1, 1.1.1w-150700.11.11.1
openssl-1_1-debuginfo - addressed in versions 1.1.1d-2.122.1, 1.1.1d-150200.11.106.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1, 1.1.1w-150700.11.11.1
libopenssl1_1-debuginfo - addressed in versions 1.1.1d-2.122.1, 1.1.1d-150200.11.106.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1, 1.1.1w-150700.11.11.1
openssl-1_1-debugsource - addressed in versions 1.1.1d-2.122.1, 1.1.1d-150200.11.106.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1, 1.1.1w-150700.11.11.1
libopenssl-1_1-devel - addressed in versions 1.1.1d-2.122.1, 1.1.1d-150200.11.106.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1, 1.1.1w-150700.11.11.1
libopenssl1_1-hmac - addressed in versions 1.1.1d-2.122.1, 1.1.1d-150200.11.106.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1
openssl-1_1 - addressed in versions 1.1.1d-2.122.1, 1.1.1d-150200.11.106.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1, 1.1.1w-150700.11.11.1
libopenssl1_1 - addressed in versions 1.1.1d-2.122.1, 1.1.1d-150200.11.106.1, 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1, 1.1.1w-150700.11.11.1
openssl-debugsource - addressed in versions 1.1.1f-41, 1.1.1wa-15, 3.0.12-24, 3.0.12-33
openssl-help - addressed in versions 1.1.1f-41, 1.1.1wa-15, 3.0.12-24, 3.0.12-33
openssl-libs - addressed in versions 1.1.1f-41, 1.1.1wa-15, 3.0.12-24, 3.0.12-33
openssl-devel - addressed in versions 1.1.1f-41, 1.1.1wa-15, 3.0.12-24, 3.0.12-33
openssl - addressed in versions 1.1.1f-41, 1.1.1wa-15, 3.0.12-24, 3.0.12-33
openssl-debuginfo - addressed in versions 1.1.1f-41, 1.1.1wa-15, 3.0.12-24, 3.0.12-33
libopenssl1_1-32bit-debuginfo - addressed in versions 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1, 1.1.1w-150700.11.11.1
openssl-1_1-doc - addressed in versions 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1
libopenssl1_1-hmac-64bit - addressed in versions 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1
libopenssl1_1-64bit - addressed in versions 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1
libopenssl-1_1-devel-64bit - addressed in versions 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1
libopenssl1_1-64bit-debuginfo - addressed in versions 1.1.1l-150400.7.87.1, 1.1.1l-150500.17.46.1, 1.1.1w-150600.5.21.1
compat-openssl11-devel - update to 1.1.1m-18
compat-openssl11-libs - update to 1.1.1m-18
compat-openssl11 - update to 1.1.1m-18
compat-openssl11-debuginfo - update to 1.1.1m-18
compat-openssl11-debugsource - update to 1.1.1m-18
openssl-perl - addressed in versions 1.1.1wa-15, 3.0.12-24, 3.0.12-33
libopenssl3-debuginfo - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-slfo.1.1_8.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1, 3.5.0-160000.5.1
openssl-3-debuginfo - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-slfo.1.1_8.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1, 3.5.0-160000.5.1
openssl-3 - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-slfo.1.1_8.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1, 3.5.0-160000.5.1
libopenssl-3-devel-32bit - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-150600.5.42.1
libopenssl-3-devel - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-slfo.1.1_8.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1, 3.5.0-160000.5.1
libopenssl3 - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-slfo.1.1_8.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1, 3.5.0-160000.5.1
libopenssl3-32bit-debuginfo - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1
openssl-3-debugsource - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-slfo.1.1_8.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1, 3.5.0-160000.5.1
libopenssl3-32bit - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1
openssl-3-doc - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-150600.5.42.1
libopenssl3-64bit - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-150600.5.42.1
libopenssl-3-devel-64bit - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-150600.5.42.1
libopenssl3-64bit-debuginfo - addressed in versions 3.0.8-150400.4.78.1, 3.0.8-150500.5.57.1, 3.1.4-150600.5.42.1
openssl-devel - update to 3.0.12-18
openssl-perl - update to 3.0.12-18
openssl-doc - update to 3.0.12-18
openssl-libs - update to 3.0.12-18
openssl - update to 3.0.12-18
openssl (Debian package) - addressed in versions 3.0.18-1~deb12u2, 3.5.4-1~deb13u2
libopenssl-3-fips-provider - addressed in versions 3.1.4-slfo.1.1_8.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1, 3.5.0-160000.5.1
libopenssl-3-fips-provider-debuginfo - addressed in versions 3.1.4-slfo.1.1_8.1, 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1, 3.5.0-160000.5.1
libopenssl-3-fips-provider-32bit-debuginfo - addressed in versions 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1
libopenssl-3-fips-provider-32bit - addressed in versions 3.1.4-150600.5.42.1, 3.2.3-150700.5.24.1
libopenssl-3-fips-provider-64bit-debuginfo - update to 3.1.4-150600.5.42.1
libopenssl-3-fips-provider-64bit - update to 3.1.4-150600.5.42.1
openssl (Red Hat package) - addressed in versions 3.5.1-7.el9_7, 3.5.1-7.el10_1
openssl - update to 3.5.4-2.fc43
NativeEdge Orchestrator - update to 4.2.0.0
python3-edk2-devel - addressed in versions 202002-34, 202011-30, 202308-29, 202308-32, 202308-35
edk2-ovmf - addressed in versions 202002-34, 202011-30, 202308-29, 202308-32, 202308-35
edk2-help - addressed in versions 202002-34, 202011-30, 202308-29, 202308-32, 202308-35
edk2-aarch64 - addressed in versions 202002-34, 202011-30, 202308-29, 202308-32, 202308-35
edk2-devel - addressed in versions 202002-34, 202011-30, 202308-29, 202308-32, 202308-35
edk2-debugsource - addressed in versions 202002-34, 202011-30, 202308-29, 202308-32, 202308-35
edk2-debuginfo - addressed in versions 202002-34, 202011-30, 202308-29, 202308-32, 202308-35
edk2 - addressed in versions 202002-34, 202011-30, 202308-29, 202308-32, 202308-35

• https://openssl-library.org/news/secadv/20260127.txt

• Multiple vulnerabilities in OpenSSL
• Ubuntu update for openssl
• Fedora 43 update for openssl
• Ubuntu update for openssl
• Debian update for openssl
• Red Hat Enterprise Linux 10 update for openssl
• SUSE update for openssl-3
• SUSE update for openssl-3
• SUSE update for openssl-3
• SUSE update for openssl-3
• SUSE update for openssl-1_1
• SUSE update for openssl-1_0_0
• SUSE update for openssl-1_0_0
• SUSE update for openssl-1_1
• SUSE update for openssl-1_1
• Red Hat Enterprise Linux 9 update for openssl
• SUSE update for openssl-1_1
• SUSE update for openssl-1_1
• SUSE update for openssl-1_1
• SUSE update for openssl-3
• Meinberg LANTIME firmware update for third-party components
• openEuler 24.03 LTS SP1 update for openssl
• openEuler 24.03 LTS update for openssl
• openEuler 22.03 LTS SP4 update for openssl
• openEuler 20.03 LTS SP4 update for openssl
• openEuler 24.03 LTS SP3 update for openssl
• openEuler 24.03 LTS SP2 update for openssl
• SUSE update for openssl1
• SUSE update for openssl-3
• Anolis OS update for openssl
• Multiple vulnerabilities in IBM MQ
• Splunk AppDynamics NodeJS Agent update for third-party components
• Multiple vulnerabilities in IBM i
• Splunk Universal Forwarder update for third-party components
• openEuler 24.03 LTS SP2 update for edk2
• openEuler 24.03 LTS SP1 update for edk2
• openEuler 24.03 LTS update for edk2
• openEuler 22.03 LTS SP4 update for edk2
• openEuler 20.03 LTS SP4 update for edk2
• openEuler 24.03 LTS SP3 update for edk2
• Multiple vulnerabilities in IBM InfoSphere Information Server
• Splunk Enterprise update for third-party components
• Splunk Universal Forwarder update for OpenSSL
• FreeBSD update for OpenSSL
• Multiple vulnerabilities in IBM Netezza Appliance
• openEuler 24.03 LTS update for compat-openssl11
• openEuler 24.03 LTS SP3 update for compat-openssl11
• openEuler 24.03 LTS SP1 update for compat-openssl11
• Multiple vulnerabilities in IBM Watson Speech Services Cartridge
• Multiple vulnerabilities in IBM Cloud Pak System
• Multiple vulnerabilities in IBM Sterling Partner Engagement Manager
• Multiple vulnerabilities in Tenable Security Center
• Tenable Security Center on Enclave Security update for third-party components
• Multiple vulnerabilities in Dell NativeEdge Orchestrator