A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.

Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer.

We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00021.

Exploitation none

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Canonical Subscribe
Ubuntu Linux Subscribe
Debian Subscribe
Debian Linux Subscribe
Linux Subscribe
Linux Kernel Subscribe

Configuration 1 [-]

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

Configuration 2 [-]

OR cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:*

Configuration 3 [-]

OR cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

No data.

No data.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-3623-1 linux-5.10 security update
Debian DSA Debian DSA DSA-5480-1 linux security update
EUVD EUVD EUVD-2023-44056 A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).
Ubuntu USN Ubuntu USN USN-6246-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6248-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6249-1 Linux kernel (OEM) vulnerabilities
Ubuntu USN Ubuntu USN USN-6250-1 Linux kernel vulnerabilities
Ubuntu USN Ubuntu USN USN-6255-1 Linux kernel (Intel IoTG) vulnerabilities
Ubuntu USN Ubuntu USN USN-6260-1 Linux kernel vulnerabilities
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
http://packetstormsecurity.com/files/174577/Kernel-Live-Patch-Security-Notice-LSN-0097-1.html cve-icon cve-icon
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=4716c73b188566865bdd79c3a6709696a224ac04 cve-icon cve-icon cve-icon
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.15.y&id=0e388fce7aec40992eadee654193cad345d62663 cve-icon cve-icon cve-icon
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef7dfac51d8ed961b742218f526bd589f3900a59 cve-icon cve-icon
https://kernel.dance/0e388fce7aec40992eadee654193cad345d62663 cve-icon cve-icon
https://kernel.dance/4716c73b188566865bdd79c3a6709696a224ac04 cve-icon cve-icon
https://kernel.dance/ef7dfac51d8ed961b742218f526bd589f3900a59 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-3389 cve-icon
https://security.netapp.com/advisory/ntap-20230731-0001/ cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-3389 cve-icon
https://www.debian.org/security/2023/dsa-5480 cve-icon cve-icon
History

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00018}

 epss

{'score': 0.00021}

Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00019}

 epss

{'score': 0.00018}

Wed, 05 Mar 2025 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Thu, 13 Feb 2025 17:00:00 +0000

Type Values Removed Values Added
Description A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable). A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation. Racing a io_uring cancel poll request with a linked timeout can cause a UAF in a hrtimer. We recommend upgrading past commit ef7dfac51d8ed961b742218f526bd589f3900a59 (4716c73b188566865bdd79c3a6709696a224ac04 for 5.10 stable and 0e388fce7aec40992eadee654193cad345d62663 for 5.15 stable).

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Google

Published:

Updated: 2025-03-05T18:55:17.919Z

Reserved: 2023-06-23T13:43:00.034Z

Link: CVE-2023-3389

cve-icon Vulnrichment

Updated: 2024-08-02T06:55:02.753Z

cve-icon NVD

Status : Modified

Published: 2023-06-28T20:15:09.773

Modified: 2025-02-13T17:16:56.317

Link: CVE-2023-3389

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-06-16T00:00:00Z

Links: CVE-2023-3389 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses