Vulnerability Details : CVE-2022-29582

In the Linux kernel before 5.17.3, fs/io_uring.c has a use-after-free due to a race condition in io_uring timeouts. This can be triggered by a local user who has no access to any user namespace; however, the race condition perhaps can only be exploited infrequently.

Vulnerability category: Memory Corruption

Published 2022-04-22 16:15:09

Updated 2022-10-26 02:33:58

Source MITRE

View at NVD, CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2022-29582

Probability of exploitation activity in the next 30 days: 0.04%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 6 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2022-29582

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Source
6.9	MEDIUM	AV:L/AC:M/Au:N/C:C/I:C/A:C	3.4	10.0	nvd@nist.gov
Access Vector: Local Access Complexity: Medium Authentication: None Confidentiality Impact: Complete Integrity Impact: Complete Availability Impact: Complete
7.0	HIGH	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	1.0	5.9	nvd@nist.gov
Attack Vector: Local Attack Complexity: High Privileges Required: Low User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2022-29582

CWE-416 Use After Free

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-29582

http://www.openwall.com/lists/oss-security/2022/04/22/4

oss-security - Re: Linux: UaF due to concurrency issue in io_uring timeouts
Mailing List;Third Party Advisory
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.17.3

Mailing List;Vendor Advisory
https://github.com/Ruia-ruia/CVE-2022-29582-Exploit

GitHub - Ruia-ruia/CVE-2022-29582-Exploit: Exploit for CVE-2022-29582 targeting Google's Kernel CTF
Third Party Advisory
https://ruia-ruia.github.io/2022/08/05/CVE-2022-29582-io-uring/

CVE-2022-29582 - Computer security and related topics
Exploit;Third Party Advisory
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e677edbcabee849bfdd43f1602bccbecf736a646

kernel/git/torvalds/linux.git - Linux kernel source tree
Mailing List;Patch;Vendor Advisory
http://www.openwall.com/lists/oss-security/2022/08/08/3

oss-security - Re: Linux: UaF due to concurrency issue in io_uring timeouts
Mailing List;Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/04/22/3

oss-security - Linux: UaF due to concurrency issue in io_uring timeouts
Mailing List;Third Party Advisory
https://github.com/torvalds/linux/commit/e677edbcabee849bfdd43f1602bccbecf736a646

io_uring: fix race between timeout flush and removal · torvalds/linux@e677edb · GitHub
Patch;Third Party Advisory
https://www.debian.org/security/2022/dsa-5127

Debian -- Security Information -- DSA-5127-1 linux
Third Party Advisory

CVEs referencing this url

Products affected by CVE-2022-29582

Debian » Debian Linux » Version: 11.0
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Matching versions
Linux » Linux Kernel
Versions before (<) 5.17.3
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions