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CVE-2021-47123

HIGH

7.8

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.

CVE Details

CVSS v3.1 Score7.8

SeverityHIGH

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/15/2024

Last Modified1/14/2025

Sourcenvd

Honeypot Sightings0

Affected Products

linux:linux_kernel

Weaknesses (CWE)

CWE-415CWE-416

References

https://git.kernel.org/stable/c/1f64f5e903b9d1d157875721e02adadc9d6f0a5d(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/447c19f3b5074409c794b350b10306e1da1ef4ba(416baaa9-dc9f-4396-8d5f-8c081fb06d67)

https://git.kernel.org/stable/c/1f64f5e903b9d1d157875721e02adadc9d6f0a5d(af854a3a-2127-422b-91ae-364da2661108)

https://git.kernel.org/stable/c/447c19f3b5074409c794b350b10306e1da1ef4ba(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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