CVE-2026-89486 Linux Kernel ipmi - Use After Free

Linux kernel ipmi contains a use-after-free vulnerability caused by missing synchronize_rcu() before freeing cmd_rcvr in _ipmi_destroy_user(), letting attackers cause memory corruption, exploit requires kernel-level access.

CVSS base score 7.8 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.12% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Use After Free
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
11 September 2026
Updated
15 October 2026

Vendor fix

Update to the latest Linux kernel version containing the fix for this issue.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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