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CVE-2022-47946 Details

Description

An issue was discovered in the Linux kernel 5.10.x before 5.10.155. A use-after-free in io_sqpoll_wait_sq in fs/io_uring.c allows an attacker to crash the kernel, resulting in denial of service. finish_wait can be skipped. An attack can occur in some situations by forking a process and then quickly terminating it. NOTE: later kernel versions, such as the 5.15 longterm series, substantially changed the implementation of io_sqpoll_wait_sq.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CNA: CISA-ADPCVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.161&id=0f544353fec8e717d37724d95b92538e1de79e86	CVE	Mailing ListPatchThird Party Advisory
https://www.openwall.com/lists/oss-security/2022/12/22/2	CVE	ExploitMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2022/12/27/1	CVE	Mailing ListThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v5.10.161&id=0f544353fec8e717d37724d95b92538e1de79e86	[email protected]	Mailing ListPatchThird Party Advisory
https://www.openwall.com/lists/oss-security/2022/12/22/2	[email protected]	ExploitMailing ListThird Party Advisory
http://www.openwall.com/lists/oss-security/2022/12/27/1	[email protected]	Mailing ListThird Party Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-416	Use After Free	[email protected]
CWE-416	Use After Free	CISA-ADP

Affected Products

Product	Versions
linux linux kernel	>= 5.10, < 5.10.155
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.

Change History

7 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 17, 2026	CVE Modified	[email protected]
Apr 15, 2025	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jan 4, 2023	Initial Analysis	[email protected]
Dec 27, 2022	CVE Modified	[email protected]