loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.

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Advisories
Source ID Title
Debian DSA Debian DSA DSA-4978-1 linux security update
EUVD EUVD EUVD-2021-28224 loop_rw_iter in fs/io_uring.c in the Linux kernel 5.10 through 5.14.6 allows local users to gain privileges by using IORING_OP_PROVIDE_BUFFERS to trigger a free of a kernel buffer, as demonstrated by using /proc/<pid>/maps for exploitation.
Ubuntu USN Ubuntu USN USN-5092-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5092-2 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-5096-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-5106-1 Linux kernel (OEM) vulnerabilities
Fixes

Solution

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Workaround

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cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T02:59:31.000Z

Reserved: 2021-09-14T00:00:00

Link: CVE-2021-41073

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-09-19T17:15:07.227

Modified: 2024-11-21T06:25:23.367

Link: CVE-2021-41073

cve-icon Redhat

Severity : Important

Publid Date: 2021-09-19T00:00:00Z

Links: CVE-2021-41073 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses