PT-2026-33747 · Linux+2 · Linux Kernel+2
CVE-2026-31430
·
Published
2026-04-12
·
Updated
2026-08-30
CVSS v3.1
7.1
High
| Vector | AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
An out-of-bounds access occurs when parsing X.509 certificates containing empty Basic Constraints or Key Usage extensions. This happens because the first byte of the extension is read before the system verifies its length. An unprivileged user can trigger this issue by submitting a specially crafted certificate to the kernel via the 'keyrings(7)' API.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Linuxmint
Linux Kernel
Ubuntu