Kernel crash via duplicate IPMI response queuing
Published Mar 25, 2026 · Updated Mar 25, 2026
Use-after-free in the Linux Kernel IPMI message handler allows local users to crash the kernel through repeated SMI send errors. In smi_work(), a failed sender call leaves intf->curr_msg uncleared and reuses newmsg, causing deliver_err_response() to enqueue the same recv_msg twice and corrupt user_msgs. A local user must reach the IPMI message path and induce consecutive SMI sender failures; the demonstrated endpoint is a NULL-pointer dereference and service interrupt.
Summary
What happened
Use-after-free in the Linux Kernel IPMI message handler allows local users to crash the kernel through repeated SMI send errors. In smi_work(), a failed sender call leaves intf->curr_msg uncleared and reuses newmsg, causing deliver_err_response() to enqueue the same recv_msg twice and corrupt user_msgs. A local user must reach the IPMI message path and induce consecutive SMI sender failures; the demonstrated endpoint is a NULL-pointer dereference and service interrupt.
The record
- CVE
- CVE-2026-23322
- Published
- Mar 25, 2026
- Updated
- Mar 25, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux Kernel
- Classifications
- CWE-416, T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 25, 2026CVE publishedPublication date reported by the CVE source.
- Mar 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=6.18
- Affected versionversion=9cf93a8fa9513c6d3cc65bdd50e05c1355cef322 <594c11d0e1d445f580898a2b8c850f2e3f099368
- Affected versionversion=9cf93a8fa9513c6d3cc65bdd50e05c1355cef322 <65ff5d1e4410df05edfbeb7bf2d62f7681ce1d53
- Affected versionversion=9cf93a8fa9513c6d3cc65bdd50e05c1355cef322 <c08ec55617cb9674a060a3392ea08391ab2a4f74
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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