CVE-2023-53998
Vulnerability Scoring
Analysis In Progress
CVE-2023-53998 Vulnerability Analysis & Exploit Details
CVE-2023-53998
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2023-53998 Details
Status: Awaiting Analysis
Last updated: 🕞 29 Dec 2025, 15:58 UTC
Originally published on: 🕚 24 Dec 2025, 11:15 UTC
Time between publication and last update: 5 days
CVSS Release:
CVE-2023-53998 Vulnerability Summary
CVE-2023-53998: In the Linux kernel, the following vulnerability has been resolved: hwrng: virtio - Fix race on data_avail and actual data The virtio rng device kicks off a new entropy request whenever the data available reaches zero. When a new request occurs at the end of a read operation, that is, when the result of that request is only needed by the next reader, then there is a race between the writing of the new data and the next reader. This is because there is no synchronisation whatsoever between the writer and the reader. Fix this by writing data_avail with smp_store_release and reading it with smp_load_acquire when we first enter read. The subsequent reads are safe because they're either protected by the first load acquire, or by the completion mechanism. Also remove the redundant zeroing of data_idx in random_recv_done (data_idx must already be zero at this point) and data_avail in request_entropy (ditto).
Assessing the Risk of CVE-2023-53998
Access Complexity Graph
The exploitability of CVE-2023-53998 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2023-53998
No exploitability data is available for CVE-2023-53998.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2023-53998, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2023-53998, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2023-53998 does not compromise confidentiality.
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Integrity:
None
CVE-2023-53998 does not impact data integrity.
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Availability:
None
CVE-2023-53998 does not affect system availability.
CVE-2023-53998 References
External References
- https://git.kernel.org/stable/c/22c30022cde6e2c88612b3a499223cfa912f1bc7
- https://git.kernel.org/stable/c/241ef15776a7c8505008db689175b320d345ecd3
- https://git.kernel.org/stable/c/2fc91f156b3f3446a1bce80cf4adedcbf41271c2
- https://git.kernel.org/stable/c/318657b4c2077289659f1cd9e2a34f6a3b208e3e
- https://git.kernel.org/stable/c/77471e4912d3960dafe141e268c44be8024fe4dc
- https://git.kernel.org/stable/c/a43bcb0b661cbbf3ad797d2aee6b6fd06b8fc69d
- https://git.kernel.org/stable/c/ac52578d6e8d300dd50f790f29a24169b1edd26c
- https://git.kernel.org/stable/c/c76d991b6f01a5d931e7053a73bc9524975a5215
CWE Common Weakness Enumeration
Unknown
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