CVE-2023-3389— Use after free in io_uring in the Linux Kernel
Quick assessment
Affected
Linux Kernel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存在内存释放后重用问题。
Possible ATT&CK Techniques 2 AI
T1055 · Process Injection T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2023-3389
Vulnerability Information
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Vulnerability Title
Use after free in io_uring in the Linux Kernel
Source: CVE Program / CVE List V5
Vulnerability 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).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
释放后使用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存在内存释放后重用问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2023-3389
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2023-3389 (3)
Vendor Advisories for CVE-2023-3389 (2)
Exploits & Public PoCs for CVE-2023-3389 (1)
Mailing List Discussions for CVE-2023-3389 (1)
Other References for CVE-2023-3389 (3)
Same Patch Batch · Linux · 2023-06-28 · 4 CVEs total
| CVE-2023-3390 | 7.8 HIGH | Use-after-free in Linux kernel's netfilter subsystem |
| CVE-2023-3090 | 7.8 HIGH | Out-of-bounds write in Linux kernel's ipvlan network driver |
| CVE-2023-1295 | 7.8 HIGH | Privilege escalation with IO_RING_OP_CLOSE in the Linux Kernel |
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V. Comments for CVE-2023-3389
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