PT-2025-40208 · Linux+1 · Linux Kernel+1
Published
2023-06-09
·
Updated
2025-11-19
·
CVE-2023-53501
CVSS v3.1
4.7
Medium
| Vector | AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
A race condition exists when unbinding a pasid, potentially leading to a refcount decrement hitting zero. The pasid state object uses a refcount that is incremented on page present reporting (PPR) notification start and decremented on PPR notification done and pasid unbind. The original implementation of refcount dec assumed the refcount would never reach zero, resulting in a warning message when unbinding a pasid. The issue is addressed by changing refcount dec to refcount dec and test to explicitly handle a refcount of one.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Race Condition
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Weakness Enumeration
Related Identifiers
Affected Products
Linux Kernel
Suse