Cloudanix VulnDB

CVE-2026-22795

Medium · 5.5

CVSS

5.5

EPSS

0.2%

Published

Jan 27, 2026

CISA due date

—

The record

Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS#12 file. Impact summary: An application processing a malformed PKCS#12 file can be caused to dereference an invalid or NULL pointer on memory read, resulting in a Denial of Service. A type confusion vulnerability exists in PKCS#12 parsing code where an ASN1_TYPE union member is accessed without first validating the type, causing an invalid pointer read. The location is constrained to a 1-byte address space, meaning any attempted pointer manipulation can only target addresses between 0x00 and 0xFF. This range corresponds to the zero page, which is unmapped on most modern operating systems and will reliably result in a crash, leading only to a Denial of Service. Exploiting this issue also requires a user or application to process a maliciously crafted PKCS#12 file. It is uncommon to accept untrusted PKCS#12 files in applications as they are usually used to store private keys which are trusted by definition. For these reasons, the issue was assessed as Low severity. The FIPS modules in 3.5, 3.4, 3.3 and 3.0 are not affected by this issue, as the PKCS12 implementation is outside the OpenSSL FIPS module boundary. OpenSSL 3.6, 3.5, 3.4, 3.3, 3.0 and 1.1.1 are vulnerable to this issue. OpenSSL 1.0.2 is not affected by this issue.

Affected packages

Ecosystem Package Introduced Fixed
AlmaLinux:10 openssl 0 1:3.5.1-7.el10_1.alma.1
AlmaLinux:10 openssl-devel 0 1:3.5.1-7.el10_1.alma.1
AlmaLinux:10 openssl-libs 0 1:3.5.1-7.el10_1.alma.1
AlmaLinux:10 openssl-perl 0 1:3.5.1-7.el10_1.alma.1
Chainguard libcrypto3-2.34 0 3.6.1-r0
Chainguard openssl 0 3.6.1-r0
Chainguard openssl-provider-fips 0 0
Chainguard openssl-provider-fips-3.1.2 0 0
Chainguard openssl-provider-fips-3.1.2 0 3.1.2-r5
Chainguard openssl-provider-fips-3.4.0 0 0
Chainguard openssl-provider-fips-3.4.0 0 3.4.0-r4
Chainguard openssl-provider-fips-3.6.0 0 0
Chainguard openssl-provider-fips-3.6.0 0 3.6.0-r2
Mageia:9 openssl 0 3.0.19-1.mga9
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOS openssl-3 0 3.0.8-150400.4.78.1
SUSE:Linux Enterprise High Performance Computing 15 SP4-LTSS openssl-3 0 3.0.8-150400.4.78.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-ESPOS openssl-3 0 3.0.8-150500.5.57.1
SUSE:Linux Enterprise High Performance Computing 15 SP5-LTSS openssl-3 0 3.0.8-150500.5.57.1
SUSE:Linux Enterprise Micro 5.3 openssl-3 0 3.0.8-150400.4.78.1
SUSE:Linux Enterprise Micro 5.4 openssl-3 0 3.0.8-150400.4.78.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7 openssl-3 0 3.2.3-150700.5.24.1
SUSE:Linux Enterprise Server 15 SP4-LTSS openssl-3 0 3.0.8-150400.4.78.1
SUSE:Linux Enterprise Server 15 SP5-LTSS openssl-3 0 3.0.8-150500.5.57.1
SUSE:Linux Enterprise Server 15 SP6-LTSS openssl-1_1 0 1.1.1w-150600.5.21.1
SUSE:Linux Enterprise Server 15 SP6-LTSS openssl-3 0 3.1.4-150600.5.42.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP4 openssl-3 0 3.0.8-150400.4.78.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP5 openssl-3 0 3.0.8-150500.5.57.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP6 openssl-1_1 0 1.1.1w-150600.5.21.1
SUSE:Linux Enterprise Server for SAP Applications 15 SP6 openssl-3 0 3.1.4-150600.5.42.1
Wolfi openssl 0 3.6.1-r0
openSUSE:Leap 15.6 openssl-1_1 0 1.1.1w-150600.5.21.1
openSUSE:Leap 15.6 openssl-3 0 3.1.4-150600.5.42.1
openSUSE:Leap 16.0 openssl-3 0 3.5.0-160000.5.1
openSUSE:Tumbleweed openssl-3 0 3.5.3-2.1

Related vulnerabilities