CVE-2026-109976CWE-787

CVE-2026-109976

Medium · published October 13, 2026

CVSS v3.1
4.7
EPSS
0%
Percentile
0.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.7 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00100 · 0.8th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-10-13T17:17Z
References (3)
https://access.redhat.com/security/cve/CVE-2026-109976 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2550375 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2550375 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 12:17Z
    Clevis: clevis: integer underflow in pkcs#11 data socket handler crashes daemon on unbound client connection
    cvelistv5
  • 13 OCT 12:17Z
    Clevis: clevis: integer underflow in pkcs#11 data socket handler crashes daemon on unbound client connection
    cvelistv5