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CVE-2026-19783

nvd nist
Published: Aug 20, 2026Modified: Aug 26, 2026

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7.8
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitability: 1.8 / Impact: 5.9
Source: NVD

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local attacker to cause kernel memory corruption due to insufficient validation. A crafted filesystem image can trigger an out-of-bounds kernel-stack write during directory reads, causing a system crash or potentially enabling privilege escalation.

Affected (7)

Products: Ibm: Vios, Aix
Ibm
2 products
Vios
Aix
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Ibm
Vios
From 4.1.0 to 4.1.0.50
Vios
From 4.1.1.0 to 4.1.1.30
Vios
From 4.1.2.0 to 4.1.2.20
Configuration B
4 vulnerable
Vulnerable SoftwareAffected Versions
Ibm
Aix
From 7.2.5 to 7.2.5.212
Aix
From 7.3.2 to 7.3.2.5
Aix
From 7.3.3 to 7.3.3.2
Aix
From 7.3.4 to 7.3.4.1

Related CWEs

CWE-787
Out-of-bounds Write
The product writes data past the end, or before the beginning, of the intended buffer.

References (1)

Source: psirt@us.ibm.com
PatchVendor Advisory

Timeline

No history available yet.