CVE-2023-53083
Vulnerability Scoring
Analysis In Progress
CVE-2023-53083 Vulnerability Analysis & Exploit Details
CVE-2023-53083
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-2023-53083 Details
Status: Awaiting Analysis
Last updated: 🕣 05 May 2025, 20:54 UTC
Originally published on: 🕓 02 May 2025, 16:15 UTC
Time between publication and last update: 3 days
CVSS Release:
CVE-2023-53083 Vulnerability Summary
CVE-2023-53083: In the Linux kernel, the following vulnerability has been resolved: nfsd: don't replace page in rq_pages if it's a continuation of last page The splice read calls nfsd_splice_actor to put the pages containing file data into the svc_rqst->rq_pages array. It's possible however to get a splice result that only has a partial page at the end, if (e.g.) the filesystem hands back a short read that doesn't cover the whole page. nfsd_splice_actor will plop the partial page into its rq_pages array and return. Then later, when nfsd_splice_actor is called again, the remainder of the page may end up being filled out. At this point, nfsd_splice_actor will put the page into the array _again_ corrupting the reply. If this is done enough times, rq_next_page will overrun the array and corrupt the trailing fields -- the rq_respages and rq_next_page pointers themselves. If we've already added the page to the array in the last pass, don't add it to the array a second time when dealing with a splice continuation. This was originally handled properly in nfsd_splice_actor, but commit 91e23b1c3982 ("NFSD: Clean up nfsd_splice_actor()") removed the check for it.
Assessing the Risk of CVE-2023-53083
Access Complexity Graph
The exploitability of CVE-2023-53083 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-2023-53083
No exploitability data is available for CVE-2023-53083.
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-2023-53083, 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-2023-53083, 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-2023-53083 does not compromise confidentiality.
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Integrity:
None
CVE-2023-53083 does not impact data integrity.
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Availability:
None
CVE-2023-53083 does not affect system availability.
CVE-2023-53083 References
External References
- https://git.kernel.org/stable/c/0101067f376eb7b9afd00279270f25d5111a091d
- https://git.kernel.org/stable/c/12eca509234acb6b666802edf77408bb70d7bfca
- https://git.kernel.org/stable/c/27c934dd8832dd40fd34776f916dc201e18b319b
- https://git.kernel.org/stable/c/51ddb84baff6f09ad62b5999ece3ec172e4e3568
- https://git.kernel.org/stable/c/8235cd619db6e67f1d7d26c55f1f3e4e575c947d
CWE Common Weakness Enumeration
Unknown
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