--- title: "CVE-2024-0397\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2024-0397?format=md keywords: index, follow --- # CVE-2024-0397 Publication date 17 June 2024 Last updated 24 June 2025 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **7.4 · High** [Score breakdown](https://ubuntu.com/security/CVE-2024-0397?format=md#impact-score) Toggle side navigation ## Description A defect was discovered in the Python “ssl” module where there is a memory race condition with the ssl.SSLContext methods “cert\_store\_stats()” and “get\_ca\_certs()”. The race condition can be triggered if the methods are called at the same time as certificates are loaded into the SSLContext, such as during the TLS handshake with a certificate directory configured. This issue is fixed in CPython 3.10.14, 3.11.9, 3.12.3, and 3.13.0a5. ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | python2.7 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Needs evaluation | | 20.04 LTS focal | Needs evaluation | | 18.04 LTS bionic | Needs evaluation | | 16.04 LTS xenial | Needs evaluation | | 14.04 LTS trusty | Needs evaluation | | python3.10 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Fixed 3.10.12-1~22.04.5 | | 20.04 LTS focal | Not in release | | python3.11 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Ignored end of life, was needs-triage | | 22.04 LTS jammy | Needs evaluation | | 20.04 LTS focal | Not in release | | python3.12 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not affected | | 24.04 LTS noble | Not affected | | 23.10 mantic | Ignored end of life, was needs-triage | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | python3.4 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 14.04 LTS trusty | Needs evaluation | | python3.5 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 16.04 LTS xenial | Not affected | | 14.04 LTS trusty | Not affected | | python3.6 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Needs evaluation | | python3.7 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Not in release | | 18.04 LTS bionic | Needs evaluation | | python3.8 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Fixed 3.8.10-0ubuntu1~20.04.11 | | 18.04 LTS bionic | Needs evaluation | | python3.9 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 25.04 plucky | Not in release | | 24.10 oracular | Not in release | | 24.04 LTS noble | Not in release | | 23.10 mantic | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Needs evaluation | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) * [Patch details](https://ubuntu.com/security/CVE-2024-0397?format=md#patch-details) ### Patch details For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) | Package | Patch details | | --- | --- | | python3.10 | * Upstream: [37324b4](https://github.com/python/cpython/commit/37324b421b72b7bc9934e27aba85d48d4773002e) | | python3.11 | * Upstream: [01c37f1](https://github.com/python/cpython/commit/01c37f1d0714f5822d34063ca7180b595abf589d) | | python3.12 | * Upstream: [542f327](https://github.com/python/cpython/commit/542f3272f56f31ed04e74c40635a913fbc12d286) | | python3.8 | * Upstream: [29c9728](https://github.com/python/cpython/commit/29c97287d205bf2f410f4895ebce3f43b5160524) | | python3.9 | * Upstream: [b228655](https://github.com/python/cpython/commit/b228655c227b2ca298a8ffac44d14ce3d22f6faa) | ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 7.4 · High * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Network | | Attack complexity | High | | Privileges required | None | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | High | | Integrity impact | None | | Availability impact | High | * Scores | Parameter | Value | | --- | --- | | Base score | 7.4 · High | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-0397) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2024-0397) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2024-0397) * [Debian](https://security-tracker.debian.org/tracker/CVE-2024-0397) ### Related Ubuntu Security Notices (USN) + [USN-6928-1](https://usn.ubuntu.com/USN-6928-1) + Python vulnerabilities + 30 July 2024 ### Other references * * * * *