Back Linuxsecurity Ubuntu 25.10: Libtasn1 Important DoS Crash Flaw USN-7954
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Libtasn1 could be made to crash if it received specially crafted input. Software Description: - libtasn1-6: Library to manage ASN.1 structures Details: It was discovered that Libtasn1 incorrectly handled decoding ASN.1 content. An attacker could possibly use this issue to cause Libtasn1 to crash, resulting in a denial of service. (CVE-2025-13151) It was discovered that Libtasn1 incorrectly handled encoding ASN.1 content. An attacker could possibly use this issue to cause Libtasn1 to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2021-46848)
A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Libtasn1 could be made to crash if it received specially crafted input. Software Description: - libtasn1-6: Library to manage ASN.1 structures Details: It was discovered that Libtasn1 incorrectly handled decoding ASN.1 content. An attacker could possibly use this issue to cause Libtasn1 to crash, resulting in a denial of service. (CVE-2025-13151) It was discovered that Libtasn1 incorrectly handled encoding ASN.1 content. An attacker could possibly use this issue to cause Libtasn1 to crash, resulting in a denial of service. This issue only affected Ubuntu 22.04 LTS. (CVE-2021-46848)
The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libtasn1-6 4.20.0-2ubuntu0.25.10.1 Ubuntu 25.04 libtasn1-6 4.20.0-2ubuntu0.25.04.1 Ubuntu 24.04 LTS libtasn1-6 4.19.0-3ubuntu0.24.04.2 Ubuntu 22.04 LTS libtasn1-6 4.18.0-4ubuntu0.2 In general, a standard system update will make all the necessary changes.
The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libtasn1-6 4.20.0-2ubuntu0.25.10.1 Ubuntu 25.04 libtasn1-6 4.20.0-2ubuntu0.25.04.1 Ubuntu 24.04 LTS libtasn1-6 4.19.0-3ubuntu0.24.04.2 Ubuntu 22.04 LTS libtasn1-6 4.18.0-4ubuntu0.2 In general, a standard system update will make all the necessary changes.
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