cve-2023-52895
Vulnerability from cvelistv5
Published
2024-08-21 06:10
Modified
2024-11-04 14:54
Severity ?
Summary
io_uring/poll: don't reissue in case of poll race on multishot request
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/36fc7317cdb16cfeae0f879916995037bb615ac4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8caa03f10bf92cb8657408a6ece6a8a73f96ce13Patch
Impacted products
Vendor Product Version
Linux Linux Version: 6.1.7   ≤
Show details on NVD website

To clipboard 

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                "id": "CVE-2023-52895",
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                    "Automatable": "no"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/poll: don\u0027t reissue in case of poll race on multishot request\n\nA previous commit fixed a poll race that can occur, but it\u0027s only\napplicable for multishot requests. For a multishot request, we can safely\nignore a spurious wakeup, as we never leave the waitqueue to begin with.\n\nA blunt reissue of a multishot armed request can cause us to leak a\nbuffer, if they are ring provided. While this seems like a bug in itself,\nit\u0027s not really defined behavior to reissue a multishot request directly.\nIt\u0027s less efficient to do so as well, and not required to rearm anything\nlike it is for singleshot poll requests."
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-52895",
    "datePublished": "2024-08-21T06:10:35.179Z",
    "dateReserved": "2024-08-21T06:07:11.013Z",
    "dateUpdated": "2024-11-04T14:54:43.845Z",
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  }
}


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