CVE-2024-36031

Description

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.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-324 CWE-324

Affected Products

Vendor	Product	Versions
linux	linux_kernel	5.10.206 — 5.10.217
linux	linux_kernel	5.15.146 — 5.15.159
linux	linux_kernel	6.1.70 — 6.1.91
linux	linux_kernel	6.6.9 — 6.6.31
linux	linux_kernel	6.7 — 6.8.10
linux	linux_kernel	6.9 — 6.9.1

References

Advisories & Patches

Other References

https://lists.debian.org/debian-lts-announce/2024/06/msg00019.html

Frequently Asked Questions

What is CVE-2024-36031? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2024-36031? +

CVE-2024-36031 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2024-36031? +

CVE-2024-36031 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-36031? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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