It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use this issue to crash the program. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. ( CVE-2021-44732 ) Jonathan Winzig discovered that Mbed TLS incorrectly handled crafted inputs. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS. ( CVE-2024-23775 ) It was discovered that Mbed TLS incorrectly handled the TLS handshake. A remote attacker could possibly use this issue to break the security guarantees of the TLS handshake. ( CVE-2025-27810 ) Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly documented the behavior of a function. Application code...
It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use this issue to crash the program. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. ( CVE-2021-44732 )
Jonathan Winzig discovered that Mbed TLS incorrectly handled crafted inputs. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS. ( CVE-2024-23775 )
It was discovered that Mbed TLS incorrectly handled the TLS handshake. A remote attacker could possibly use this issue to break the security guarantees of the TLS handshake. ( CVE-2025-27810 )
Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly documented the behavior of a function. Application code...
It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use this issue to crash the program. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. ( CVE-2021-44732 ) Jonathan Winzig discovered that Mbed TLS incorrectly handled crafted inputs. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS. ( CVE-2024-23775 ) It was discovered that Mbed TLS incorrectly handled the TLS handshake. A remote attacker could possibly use this issue to break the security guarantees of the TLS handshake. ( CVE-2025-27810 ) Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly documented the behavior of a function. Application code relying on the documented behavior might be affected. A remote attacker could possibly use this issue to execute arbitrary code. ( CVE-2025-47917 ) Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly handled crafted input. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. ( CVE-2025-48965 ) It was discovered that Mbed TLS incorrectly handled a race condition. An attacker could possibly use this issue to extract AES keys. ( CVE-2025-52496 ) Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly handled certain invalid input. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. ( CVE-2025-52497 )
It was discovered that Mbed TLS incorrectly handled memory allocation failures. A remote attacker could possibly use this issue to crash the program. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. ( CVE-2021-44732 )
Jonathan Winzig discovered that Mbed TLS incorrectly handled crafted inputs. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS. ( CVE-2024-23775 )
It was discovered that Mbed TLS incorrectly handled the TLS handshake. A remote attacker could possibly use this issue to break the security guarantees of the TLS handshake. ( CVE-2025-27810 )
Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly documented the behavior of a function. Application code relying on the documented behavior might be affected. A remote attacker could possibly use this issue to execute arbitrary code. ( CVE-2025-47917 )
Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly handled crafted input. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. ( CVE-2025-48965 )
It was discovered that Mbed TLS incorrectly handled a race condition. An attacker could possibly use this issue to extract AES keys. ( CVE-2025-52496 )
Linh Le and Ngan Nguyen discovered that Mbed TLS incorrectly handled certain invalid input. A remote attacker could possibly use this issue to crash the program, resulting in a denial of service. ( CVE-2025-52497 )
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 Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.
The full story
This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.
