CVE-2024-36031
CRITICALDescription
In the Linux kernel, the following vulnerability has been resolved: keys: Fix overwrite of key expiration on instantiation The expiry time of a key is unconditionally overwritten during instantiation, defaulting to turn it permanent. This causes a problem for DNS resolution as the expiration set by user-space is overwritten to TIME64_MAX, disabling further DNS updates. Fix this by restoring the condition that key_set_expiry is only called when the pre-parser sets a specific expiry.
How to fix
This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.
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Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Exploit Intelligence
Moderate risk: more likely to be exploited than 53% of all known CVEs.
References
Related Vulnerabilities
Other CWE-324 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2022-35401 | High | 8.1 | 21% | - | - |
| CVE-2022-2447 | Medium | 6.6 | 0.7% | - | Fix |
| CVE-2019-3790 | Medium | 6.1 | 0.7% | - | Fix |
| CVE-2021-33020 | High | 8.2 | 0.6% | - | Fix |
| CVE-2022-24732 | Medium | 6.3 | 0.4% | - | Fix |
| CVE-2024-7318 | Medium | 4.8 | 0.4% | - | Fix |
Common questions
How do I fix CVE-2024-36031?
Published advisories record a fix for 299 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2024-36031 being actively exploited?
Not that we know of. CVE-2024-36031 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.75% is the estimated probability that it will be exploited in the next 30 days. That is higher than 53% of all scored CVEs.
How severe is CVE-2024-36031?
CVE-2024-36031 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2024-36031 affect?
Published advisories record a fix for bpftool (Amazon), bpftool-debuginfo (Amazon), kernel (Amazon), kernel-debuginfo (Amazon), and 295 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-06-17.