CVE-2023-52576 — x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer()
In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer() The code calling ima_free_kexec_b…
Published: 2024-03-02 · CVSS: 5.5 · CVSS 3.1
In the Linux kernel, the following vulnerability has been resolved: x86/mm, kexec, ima: Use memblock_free_late() from ima_free_kexec_buffer() The code calling ima_free_kexec_buffer() runs long after the memblock allocator has already been torn down, potentially resulting in a use after free in memblock_isolate_range(). With KASAN or KFENCE, this use after free will result in a BUG from the idle task, and a subsequent kernel panic. Switch ima_free_kexec_buffer() over to memblock_free_late() to avoid that bug.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7