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libtasn1: libtasn1: Denial of Service via stack-based buffer overflow in asn1_expend_octet_string

🗓️ 10 Apr 2026 20:46:25Reported by RedHatType 
redhat
 redhat🔗 access.redhat.com👁 3 Views

Denial of Service via stack overflow in libtasn1 asn1_expend_octet_string from validation failure.

Related
Packages
Refs
ReporterTitlePublishedViews
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IBM Security Bulletins		Security Bulletin: Multiple vulnerabilities in IBM MQ Agent images
27 Jul 202612:10
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Security Vulnerabilities in the Containerized Version of IBM Guardium Key Lifecycle Manager
24 Jul 202614:11
–ibm
FreeBSD		libtasn1 -- Stack-based buffer overflow
7 Jan 202600:00
–freebsd
Tenable Nessus		Amazon Linux 2023 : libtasn1, libtasn1-devel, libtasn1-tools (ALAS2023-2026-1395)
5 Feb 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : libtasn1, --advisory ALAS2-2026-3143 (ALAS-2026-3143)
5 Feb 202600:00
–nessus
Tenable Nessus		Alibaba Cloud Linux 3 : 0199: libtasn1 (ALINUX3-SA-2026:0199)
16 Jul 202600:00
–nessus
Tenable Nessus		AlmaLinux 10 : libtasn1 (ALSA-2026:28235)
24 Jun 202600:00
–nessus
Tenable Nessus		AlmaLinux 9 : libtasn1 (ALSA-2026:28253)
26 Jun 202600:00
–nessus
Tenable Nessus		AlmaLinux 8 : libtasn1 (ALSA-2026:36728)
9 Jul 202600:00
–nessus
Tenable Nessus		EulerOS 2.0 SP13 : libtasn1 (EulerOS-SA-2026-1250)
10 Mar 202600:00
–nessus
Rows per page
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Hardened Imagesanyaarch64libtasn14.21.0-1.1.hum1libtasn1-4.21.0-1.1.hum1.aarch64.rpm
Red Hat Hardened Imagesanyx86_64libtasn14.21.0-1.1.hum1libtasn1-4.21.0-1.1.hum1.x86_64.rpm

Data

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26 Jul 2026 17:00Current
6.9Medium risk
Vulners AI Score6.9
CVSS 3.17.5
EPSS0.01109
SSVC
CWE-120
denial of servicelibtasn1asn1_expend_octet_stringbuffer overflowinput validation
3