CVE-2025-38456: ipmi:msghandler: Fix potential memory corruption in ipmi_create_user()

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-25 · updated 2026-07-30
Weakness: CWE-787

Description

In the Linux kernel, the following vulnerability has been resolved: ipmi:msghandler: Fix potential memory corruption in ipmi_create_user() The "intf" list iterator is an invalid pointer if the correct "intf->intf_num" is not found. Calling atomic_dec(&intf->nr_users) on and invalid pointer will lead to memory corruption. We don't really need to call atomic_dec() if we haven't called atomic_add_return() so update the if (intf->in_shutdown) path as well.

Affected products

Debian Linux: 11.0
Linux kernel: from 5.19 before 6.1.146; from 6.2 before 6.6.99; from 6.7 before 6.12.39; from 6.13 before 6.15.7 — fixed in 6.1.146, 6.12.39, 6.15.7, 6.6.99

How to fix

Upgrade to a fixed version: Linux kernel 6.1.146, 6.12.39, 6.15.7, 6.6.99. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2025-38456 or the next vulnerability affects your stack