CVE-2023-1872 (GCVE-0-2023-1872)

Vulnerability from cvelistv5 – Published: 2023-04-12 15:40 – Updated: 2025-02-13 16:39
VLAI?
Title
Use-after-free in Linux kernel's io_uring subsystem
Summary
A use-after-free vulnerability in the Linux Kernel io_uring system can be exploited to achieve local privilege escalation. The io_file_get_fixed function lacks the presence of ctx->uring_lock which can lead to a Use-After-Free vulnerability due a race condition with fixed files getting unregistered. We recommend upgrading past commit da24142b1ef9fd5d36b76e36bab328a5b27523e8.
Severity ?
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Kernel Affected: 5.7 , ≤ 5.17 (custom)
Create a notification for this product.
Credits
Bing-Jhong Billy Jheng of Starlabs
Show details on NVD website
To clipboard 

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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.