openssl: OpenSSL: Heap buffer over-read in ASN.1 decoding can lead to denial of service or information disclosure.

A flaw was found in OpenSSL. An integer truncation vulnerability in the ASN.1 decoder can occur when processing a crafted DER-encoded ASN.1 structure with a primitive element exceeding 2 gigabytes. A remote attacker could exploit this to cause a heap buffer over-read. This may lead to an...

Important: Red Hat Security Advisory: openssl security update

An update for openssl is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from t...

EUVD-2026-35476

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...

AZL-89805 CVE-2026-42766 affecting package openssl-fips-provider 3.1.2-2

Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summary: This NULL pointer dereference leads to an application crash and a Denial of Service. The CMS PasswordRecipientInfo.keyDerivationAlgorithm field is define...

AZL-89940 CVE-2026-34180 affecting package openssl for versions less than 3.3.7-3

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...

AZL-89855 CVE-2026-34180 affecting package edk2 for versions less than 20240524git3e722403cd16-18

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...

AZL-89796 CVE-2026-34180 affecting package openssl-fips-provider 3.1.2-2

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...

CVE-2026-34180 Heap Buffer Over-read in ASN.1 Content Parsing

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...

UBUNTU-CVE-2026-34180

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...

CVE-2026-40510

OpenSC before 0.27.0-rc1, fixed in commit 3f24f0b, contains a stack buffer overflow vulnerability in pivprocesshistory in src/libopensc/card-piv.c that allows physically present attackers to trigger memory corruption by presenting a crafted PIV smart card or USB device returning a URL field longe...

CVE-2026-45615

ASN.1 compiler mouse07410/asn1c (1.4 and earlier) contains a memory-safety flaw in the OER decoding skeleton (INTEGER_oer.c). Parsing a crafted, zero-length OER payload for a variable-length, non-negative INTEGER can skip required-byte validation before extracting the MSB, causing a precise 1-byt...

CVE-2026-43988 Vanetza: Remote Denial of Service via Uncaught Exception in ASN.1/OER Parsing

Vanetza is an open-source implementation of the ETSI C-ITS protocol suite. In 26.02 and earlier, a denial-of-service vulnerability was identified in the ASN.1/OER parsing pipeline of Vanetza. When processing malformed network packets containing corrupted ASN.1/OER structures e.g., invalid length...

pyasn1: pyasn1 Vulnerable to Denial of Service via Unbounded Recursion

An unbounded recursion flaw has been discovered in the pypi pyasn1 library. This uncontrolled recursion occurs when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing nested SEQUENCE 0x30 or SET 0x31 tags with Indefinite Length 0x80 markers. Thi...

Astra Linux – Vulnerability in Heimdal, Samba

Before version 7.7.1, Heimdal allowed remote attackers to execute arbitrary code due to an invalid free operation in the ASN.1 codec used by the Key Distribution Center KDC...

SUSE-SU-2026:21559-1 Security update for wireshark

This update for wireshark fixes the following issues - CVE-2026-3201: missing limit checks in USB HID protocol dissector's parsereportdescriptor function can lead to memory exhaustion bsc1258907. - CVE-2026-3203: missing length checks in the RF4CE Profile protocol dissector can lead to illegal...

AZL-85217 CVE-2026-6527 affecting package wireshark 4.4.7-2

ASN.1 PER protocol dissector crash in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service...

JLSEC-2026-239 Issue summary: Processing some specially crafted ASN.1 object identifiers or data containing them...

Issue summary: Processing some specially crafted ASN.1 object identifiers or data containing them may be very slow. Impact summary: Applications that use OBJobj2txt directly, or use any of the OpenSSL subsystems OCSP, PKCS7/SMIME, CMS, CMP/CRMF or TS with no message size limit may experience...

ROS-20260420-73-0020

Vulnerability ASN.1 in the pyasn1 library of the Python programming language is related to unrestricted resource allocation. Exploitation of the vulnerability could allow an attacker acting remotely to cause a denial of service...

Debian dsa-6194 : python-pyasn1-doc - security update

The remote Debian 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6194 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6194-1 [email protected] https://www.debian.org/security/...

PYSEC-2026-2263

pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.3, the pyasn1 library is vulnerable to a Denial of Service DoS attack caused by uncontrolled recursion when decoding ASN.1 data with deeply nested structures. An attacker can supply a crafted payload containing thousands of nested SEQUENC...