CVE Database›Document archive›CVE-2026-46033

CVE-2026-46033

kernel: crypto: authencesn - reject short ahash digests during instance creation

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Severity

Moderate

Red Hat Product Security

7.1

CVSS 3.1

Review impact separately from score.

Published · May 27, 2026

Updated · August 20, 2026

Description

A flaw was found in the Linux kernel's authencesn cryptographic module. This vulnerability arises from insufficient validation of cryptographic digest sizes during the creation of new instances. A local attacker could exploit this by providing a malformed input, leading to an out-of-bounds memory access. This could cause system instability, a denial of service (DoS), or potentially enable unauthorized access to sensitive information or system control.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

CVSS / CWE

CVSS 3.1 · 7.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

CWE-1284 · Improper Validation of Specified Quantity in Input