PT-2026-47353 · Linux · Linux Kernel

CVE-2026-46281 · Published 2026-06-08 · Updated 2026-07-24

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A buffer overflow exists in the vrealloc node align() function. When a request is made to shrink an allocation (size < old size) and a new allocation is required due to NUMA node or alignment constraints, the system performs a memcpy() of old size bytes into a new buffer of size bytes. This leads to an out-of-bounds write on the new buffer.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2026-46281

OPENSUSE-SU-2026:11014-1

USN-8488-1

USN-8488-2

USN-8489-1

USN-8507-1

USN-8569-1

USN-8603-1

Affected Products

Linux Kernel

References · 1134

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46281.json · Exploit
• https://ubuntu.com/security/CVE-2026-46135 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46015 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46234 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46002 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-31609 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53358 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53115 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-63853 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46063 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53053 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46304 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-53012 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46322 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-46068 · Vendor Advisory