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VULNERABILITIES

CVE-2021-47123 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA: kernel.orgCVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.

URLSource(s)Tag(s)
https://git.kernel.org/stable/c/1f64f5e903b9d1d157875721e02adadc9d6f0a5d kernel.orgPatch
https://git.kernel.org/stable/c/447c19f3b5074409c794b350b10306e1da1ef4ba kernel.orgPatch
https://git.kernel.org/stable/c/1f64f5e903b9d1d157875721e02adadc9d6f0a5d CVEPatch
https://git.kernel.org/stable/c/447c19f3b5074409c794b350b10306e1da1ef4ba CVEPatch

Weakness Enumeration

CWE-IDCWE NameSource
CWE-415Double Free[email protected]
CWE-416Use After Free[email protected]

Affected Products

ProductVersions
linux linux kernel
>= 5.11, < 5.12.10
5.13 rc1

CPE

  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
  • cpe:2.3:o:linux:linux_kernel:5.13:rc1:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-47123
NVD Published Date:
Mar 15, 2024
NVD Last Modified:
Aug 4, 2026
Source:
kernel.org
CVE-2021-47123 Details - Not Deferred