What’s Vulnerable › Vulnerabilities

CVE-2026-31543: crash_dump: don't log dm-crypt key bytes in read_key_from_user_keying

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-24 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: crash_dump: don't log dm-crypt key bytes in read_key_from_user_keying When debug logging is enabled, read_key_from_user_keying() logs the first 8 bytes of the key payload and partially exposes the dm-crypt key. Stop logging any key bytes.

Affected products

• Linux kernel: from 6.16 before 6.18.20; from 6.19 before 6.19.10; 7.0-rc1, 7.0-rc2, 7.0-rc3, 7.0-rc4 — fixed in 6.18.20, 6.19.10

How to fix

Upgrade to a fixed version: Linux kernel 6.18.20, 6.19.10. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/36f46b0e36892eba08978eef7502ff3c94ddba77
• https://git.kernel.org/stable/c/4897bd307ba8757c31a3325ba6730961be606016
• https://git.kernel.org/stable/c/ed8d91f469845d62d44c565a55d2ab1767969357

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