HomeDefectsLIN1025-13847
Acknowledged

LIN1025-13847 : Security Advisory - linux - CVE-2026-31689

Created: Apr 28, 2026    Updated: Apr 30, 2026
Found In Version: 10.25.33.2
Severity: Standard
Applicable for: Wind River Linux LTS 25
Component/s: Kernel

Description

In the Linux kernel, the following vulnerability has been resolved:  EDAC/mc: Fix error path ordering in edac_mc_alloc()  When the mci->pvt_info allocation in edac_mc_alloc() fails, the error path will call put_device() which will end up calling the device's release function.  However, the init ordering is wrong such that device_initialize() happens *after* the failed allocation and thus the device itself and the release function pointer are not initialized yet when they're called:    MCE: In-kernel MCE decoding enabled.   ------------[ cut here ]------------   kobject: '(null)': is not initialized, yet kobject_put() is being called.   WARNING: lib/kobject.c:734 at kobject_put, CPU#22: systemd-udevd   CPU: 22 UID: 0 PID: 538 Comm: systemd-udevd Not tainted 7.0.0-rc1+ #2 PREEMPT(full)   RIP: 0010:kobject_put   Call Trace:    <TASK>    edac_mc_alloc+0xbe/0xe0 [edac_core]    amd64_edac_init+0x7a4/0xff0 [amd64_edac]    ? __pfx_amd64_edac_init+0x10/0x10 [amd64_edac]    do_one_initcall    ...  Reorder the calling sequence so that the device is initialized and thus the release function pointer is properly set before it can be used.  This was found by Claude while reviewing another EDAC patch.