In the Linux kernel, the following vulnerability has been resolved: crypto: arm64/neonbs - fix out-of-bounds access on short input The bit-sliced implementation of AES-CTR operates on blocks of 128 bytes, and will fall back to the plain NEON version for tail blocks or inputs that are shorter than 128 bytes to begin with. It will call straight into the plain NEON asm helper, which performs all memory accesses in granules of 16 bytes (the size of a NEON register). For this reason, the associated plain NEON glue code will copy inputs shorter than 16 bytes into a temporary buffer, given that this is a rare occurrence and it is not worth the effort to work around this in the asm code. The fallback from the bit-sliced NEON version fails to take this into account, potentially resulting in out-of-bounds accesses. So clone the same workaround, and use a temp buffer for short in/outputs.
History

Fri, 01 Nov 2024 15:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'}


Thu, 19 Sep 2024 10:45:00 +0000

Type Values Removed Values Added
Weaknesses CWE-125

cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-04-04T08:20:21.077Z

Updated: 2024-12-19T08:47:28.923Z

Reserved: 2024-02-19T14:20:24.178Z

Link: CVE-2024-26789

cve-icon Vulnrichment

Updated: 2024-08-02T00:14:13.508Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2024-04-04T09:15:08.400

Modified: 2024-11-21T09:03:04.573

Link: CVE-2024-26789

cve-icon Redhat

Severity : Moderate

Publid Date: 2024-04-04T00:00:00Z

Links: CVE-2024-26789 - Bugzilla