CVE-2023-53205
BaseFortify
Publication date: 2025-09-15
Last updated on: 2025-12-04
Assigner: kernel.org
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linux | linux_kernel | From 5.13 (inc) to 5.15.121 (exc) |
| linux | linux_kernel | From 5.16 (inc) to 6.1.39 (exc) |
| linux | linux_kernel | From 6.2 (inc) to 6.4.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a race condition in the Linux kernel's KVM s390 architecture diagnostic 9c handler. It involves a racy access to the physical CPU number, where the target CPU value might change between the check and its use, potentially causing out-of-bound accesses to CPU arrays. The fix involves holding the physical target CPU in a local variable to prevent this issue.
How can this vulnerability impact me? :
The vulnerability could lead to out-of-bound accesses in the kernel's CPU arrays, which may cause system instability, crashes, or potentially allow unintended behavior in the kernel's virtualization subsystem on s390 architectures.