medium5.5
CVE-2023-52576
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 …
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.13 before 6.1.56 from 6.2 before 6.5.6 Version 6.6 |
Weakness classification
References
- NVD record
- CVE.org record
- https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b
- https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204
- https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b
- https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685b
- https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204
- https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2b