CVSS 3.1
5.5 mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HCVE-2023-52576
Medium (5.5) in linux linux kernel. EPSS 0.2% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 12% of CVEs (scores of 2026-10-31)
- CWE
- CWE-416
- Published
- Modified
- Record from
- the NVD, synced
Affected
- linux:linux_kernel
References
- 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