CVE-2025-21997

What it is

In the Linux kernel, the following vulnerability has been resolved: xsk: fix an integer overflow in xp_create_and_assign_umem() Since the i and pool->chunk_size variables are of type 'u32', their product can wrap around and then be cast to 'u64'. This can lead to two different XDP buffers pointing to the same memory area. Found by InfoTeCS on behalf of Linux Verification Center (linuxtesting.org) with SVACE.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account. High risk of service disruption.

Exploit odds

0.2% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-04-03 08:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 08:44 UTC Last updatedMost recent change to the record

Details

Published

2025-04-03 08:15 UTC

Last modified

2026-06-17 08:44 UTC

Exploit probability

0.2% · EPSS, next 30 days

Weakness

CWE-190 · Integer overflow

Record status

Modified

Affected

• Linux Kernel < 6.1.132
• Linux Kernel < 6.6.85
• Linux Kernel < 6.12.21
• Linux Kernel < 6.13.9
• Linux Kernel 6.14

Attack profile CVSS 3.1 · 5.5

Attack vector

Local

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High