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Vulnerabilities CVE-2021-47123

CVE-2021-47123

High
Open
TLP:CLEAR

io_uring: fix ltout double free on completion race

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Description

In the Linux kernel, the following vulnerability has been resolved: io_uring: fix ltout double free on completion race Always remove linked timeout on io_link_timeout_fn() from the master request link list, otherwise we may get use-after-free when first io_link_timeout_fn() puts linked timeout in the fail path, and then will be found and put on master's free.

Details

CVSS Score
7.8
EPSS Score
0.22%

12.6th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence
90%
Published
Mar 15, 2024
Last Modified
Aug 5, 2026
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