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CVE-2026-109976

Clevis: clevis: integer underflow in pkcs#11 data socket handler crashes daemon on unbound client connection

CVSS 3.1 4.7 MEDIUMCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-109976

Published

A flaw was found in the clevis PKCS#11 pin. The clevis-pkcs11-afunix-socket-unlock daemon crashes when an AF_UNIX client connects to the data socket without a bound address, due to an integer underflow in the getpeername result handling. This causes a denial of service, preventing LUKS disk decryption from completing during boot.

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Affected versions, risk and source history

Exploitation and risk

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cve-program · CVE-2026-109976

Published

Clevis: clevis: integer underflow in pkcs#11 data socket handler crashes daemon on unbound client connection

A flaw was found in the clevis PKCS#11 pin. The clevis-pkcs11-afunix-socket-unlock daemon crashes when an AF_UNIX client connects to the data socket without a bound address, due to an integer underflow in the getpeername result handling. This causes a denial of service, preventing LUKS disk decryption from completing during boot.

Source published
13 Oct 2026 12:17:05 UTC
Source modified
6 Nov 2026 17:50:35 UTC
Saved here
6 Nov 2026 19:02:40 UTC
Source terms
CVE Program Terms of Use

Original source record · Cite this exact observation · Complete original publisher JSON

Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.

CVSS 3.1 · 4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

ChangeIntel

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Sources read 15 Nov 18:02 UTC · 254 of 275 readable · 250 fully read · documentation 469/469 current

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