CVE-2026-23322ipmi: Fix use-after-free and list corruption on sender error
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: ipmi: Fix use-after-free and list corruption on sender error The analysis from Breno: When the SMI sender returns an error, smi_work() delivers an error response but then jumps back to restart without cleaning up properly: 1. intf->curr_msg is not cleared, so no new message is pulled 2. newmsg still points to the message, causing sender() to be called again with the same message 3. If sender() fails again, deliver_err_response() is called with the same recv_msg that was already queued for delivery This causes list_add corruption ("list_add double add") because the recv_msg is added to the user_msgs list twice. Subsequently, the corrupted list leads to use-after-free when the memory is freed and reused, and eventually a NULL pointer dereference when accessing recv_msg->done. The buggy sequence: sender() fails -> deliver_err_response(recv_msg) // recv_msg queued for delivery -> goto restart // curr_msg not cleared! sender() fails again (same message!) -> deliver_err_response(recv_msg) // tries to queue same recv_msg -> LIST CORRUPTION Fix this by freeing the message and setting it to NULL on a send error. Also, always free the newmsg on a send error, otherwise it will leak.
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Analyzed
- Record last updated
- May 11, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from 9cf93a8fa9513c6d3cc65bdd50e05c1355cef322 before c08ec55617cb9674a060a3392ea08391ab2a4f74; from 9cf93a8fa9513c6d3cc65bdd50e05c1355cef322 before 65ff5d1e4410df05edfbeb7bf2d62f7681ce1d53; from 9cf93a8fa9513c6d3cc65bdd50e05c1355cef322 before 594c11d0e1d445f580898a2b8c850f2e3f099368 | CNA record |
linux linux_kernel linux:linux_kernel | from 6.18.1 before 6.18.17; from 6.19 before 6.19.7; 6.18; 7.0; 7.0; 7.0; 7.0; 7.0; and 2 more ranges | NVD |
References
- https://git.kernel.org/stable/c/c08ec55617cb9674a060a3392ea08391ab2a4f74patch
- https://git.kernel.org/stable/c/65ff5d1e4410df05edfbeb7bf2d62f7681ce1d53patch
- https://git.kernel.org/stable/c/594c11d0e1d445f580898a2b8c850f2e3f099368patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.