Headline
Ubuntu Security Notice USN-6930-1
Ubuntu Security Notice 6930-1 - It was discovered that the Hotspot component of OpenJDK 11 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 11 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
==========================================================================
Ubuntu Security Notice USN-6930-1
July 31, 2024
openjdk-lts vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in OpenJDK 11.
Software Description:
- openjdk-lts: Open Source Java implementation
Details:
It was discovered that the Hotspot component of OpenJDK 11 was not properly
performing bounds when handling certain UTF-8 strings, which could lead to
a buffer overflow. An attacker could possibly use this issue to cause a
denial of service or execute arbitrary code. (CVE-2024-21131)
It was discovered that the Hotspot component of OpenJDK 11 could be made to
run into an infinite loop. If an automated system were tricked into
processing excessively large symbols, an attacker could possibly use this
issue to cause a denial of service. (CVE-2024-21138)
It was discovered that the Hotspot component of OpenJDK 11 did not
properly perform range check elimination. An attacker could possibly use
this issue to cause a denial of service, execute arbitrary code or bypass
Java sandbox restrictions. (CVE-2024-21140)
Yakov Shafranovich discovered that the Concurrency component of OpenJDK 11
incorrectly performed header validation in the Pack200 archive format. An
attacker could possibly use this issue to cause a denial of service.
(CVE-2024-21144)
Sergey Bylokhov discovered that OpenJDK 11 did not properly manage memory
when handling 2D images. An attacker could possibly use this issue to
obtain sensitive information. (CVE-2024-21145)
It was discovered that the Hotspot component of OpenJDK 11 incorrectly
handled memory when performing range check elimination under certain
circumstances. An attacker could possibly use this issue to cause a
denial of service, execute arbitrary code or bypass Java sandbox
restrictions. (CVE-2024-21147)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 24.04 LTS
openjdk-11-jdk 11.0.24+8-1ubuntu3~24.04.1
openjdk-11-jdk-headless 11.0.24+8-1ubuntu3~24.04.1
openjdk-11-jre 11.0.24+8-1ubuntu3~24.04.1
openjdk-11-jre-headless 11.0.24+8-1ubuntu3~24.04.1
openjdk-11-jre-zero 11.0.24+8-1ubuntu3~24.04.1
Ubuntu 22.04 LTS
openjdk-11-jdk 11.0.24+8-1ubuntu3~22.04
openjdk-11-jdk-headless 11.0.24+8-1ubuntu3~22.04
openjdk-11-jre 11.0.24+8-1ubuntu3~22.04
openjdk-11-jre-headless 11.0.24+8-1ubuntu3~22.04
openjdk-11-jre-zero 11.0.24+8-1ubuntu3~22.04
Ubuntu 20.04 LTS
openjdk-11-jdk 11.0.24+8-1ubuntu3~20.04
openjdk-11-jdk-headless 11.0.24+8-1ubuntu3~20.04
openjdk-11-jre 11.0.24+8-1ubuntu3~20.04
openjdk-11-jre-headless 11.0.24+8-1ubuntu3~20.04
openjdk-11-jre-zero 11.0.24+8-1ubuntu3~20.04
This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart Java
applications to make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-6930-1
CVE-2024-21131, CVE-2024-21138, CVE-2024-21140, CVE-2024-21144,
CVE-2024-21145, CVE-2024-21147
Package Information:
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.24+8-1ubuntu3~24.04.1
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.24+8-1ubuntu3~22.04
https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.24+8-1ubuntu3~20.04
Related news
Ubuntu Security Notice 7097-1 - Andy Boothe discovered that the Networking component of OpenJDK 11 did not properly handle access under certain circumstances. An unauthenticated attacker could possibly use this issue to cause a denial of service. It was discovered that the Hotspot component of OpenJDK 11 did not properly handle vectorization under certain circumstances. An unauthenticated attacker could possibly use this issue to access unauthorized resources and expose sensitive information.
Ubuntu Security Notice 7096-1 - Andy Boothe discovered that the Networking component of OpenJDK 8 did not properly handle access under certain circumstances. An unauthenticated attacker could possibly use this issue to cause a denial of service. It was discovered that the Hotspot component of OpenJDK 8 did not properly handle vectorization under certain circumstances. An unauthenticated attacker could possibly use this issue to access unauthorized resources and expose sensitive information.
Debian Linux Security Advisory 5736-1 - Several vulnerabilities have been discovered in the OpenJDK Java runtime, which may result in denial of service, information disclosure or bypass of Java sandbox restrictions.
Ubuntu Security Notice 6932-1 - It was discovered that the Hotspot component of OpenJDK 21 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 21 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6932-1 - It was discovered that the Hotspot component of OpenJDK 21 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 21 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6932-1 - It was discovered that the Hotspot component of OpenJDK 21 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 21 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6932-1 - It was discovered that the Hotspot component of OpenJDK 21 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 21 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6932-1 - It was discovered that the Hotspot component of OpenJDK 21 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 21 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6931-1 - It was discovered that the Hotspot component of OpenJDK 17 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 17 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6931-1 - It was discovered that the Hotspot component of OpenJDK 17 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 17 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6931-1 - It was discovered that the Hotspot component of OpenJDK 17 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 17 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6931-1 - It was discovered that the Hotspot component of OpenJDK 17 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 17 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6931-1 - It was discovered that the Hotspot component of OpenJDK 17 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 17 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Ubuntu Security Notice 6929-1 - It was discovered that the Hotspot component of OpenJDK 8 was not properly performing bounds when handling certain UTF-8 strings, which could lead to a buffer overflow. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. It was discovered that the Hotspot component of OpenJDK 8 could be made to run into an infinite loop. If an automated system were tricked into processing excessively large symbols, an attacker could possibly use this issue to cause a denial of service.
Red Hat Security Advisory 2024-4568-03 - An update for java-17-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4568-03 - An update for java-17-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4568-03 - An update for java-17-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4568-03 - An update for java-17-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4568-03 - An update for java-17-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4563-03 - An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4563-03 - An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4563-03 - An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4563-03 - An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4563-03 - An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4563-03 - An update for java-1.8.0-openjdk is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.4 Telecommunications Update Service, Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Telecommunications Update Service, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions, and Red Hat Enterprise Linux 9.2 Extended Update Support. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4573-03 - An update for java-21-openjdk is now available for Red Hat Enterprise Linux 8 and Red Hat Enterprise Linux 9. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4573-03 - An update for java-21-openjdk is now available for Red Hat Enterprise Linux 8 and Red Hat Enterprise Linux 9. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4573-03 - An update for java-21-openjdk is now available for Red Hat Enterprise Linux 8 and Red Hat Enterprise Linux 9. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4573-03 - An update for java-21-openjdk is now available for Red Hat Enterprise Linux 8 and Red Hat Enterprise Linux 9. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4573-03 - An update for java-21-openjdk is now available for Red Hat Enterprise Linux 8 and Red Hat Enterprise Linux 9. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4572-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4572-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4572-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4572-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4572-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4571-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4571-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4571-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4571-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4571-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4570-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4570-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4570-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4570-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4570-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4569-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4569-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4569-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4569-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4569-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4566-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4566-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4566-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4566-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4566-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.
Red Hat Security Advisory 2024-4566-03 - An update is now available for OpenJDK. Issues addressed include an out of bounds access vulnerability.