Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.13, < 6.1.56 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685bPatch
- https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204Patch
- https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2bPatch
- https://git.kernel.org/stable/c/34cf99c250d5cd2530b93a57b0de31d3aaf8685bPatch
- https://git.kernel.org/stable/c/d2dfbc0e3b7a04c2d941421a958dc31c897fb204Patch
- https://git.kernel.org/stable/c/eef16bfdb212da60f5144689f2967fb25b051a2bPatch
FAQ
What is CVE-2023-52576?
CVE-2023-52576 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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...
How severe is CVE-2023-52576?
CVE-2023-52576 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-52576?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.