CVE-2023-32256— Kernel: ksmbd race issue from smb2 close and logoff with multichannel
Quick assessment
Affected
CVE-2023-32256
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ksmbd组件存在竞争条件问题，可能导致释放后重用。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 13
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| None | None | < 5.15.145 |
affected |
6.0.0< 6.0.* |
affected | ||
6.1.0< 6.1.29 |
affected | ||
6.2.0< 6.2.16 |
affected | ||
6.3.0< 6.3.2 |
affected | ||
| Red Hat | Red Hat Enterprise Linux 10 | any |
unaffected |
| Red Hat | Red Hat Enterprise Linux 6 | any |
unaffected |
| Red Hat | Red Hat Enterprise Linux 7 | any |
unaffected |
any |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 8 | any |
unaffected |
any |
unaffected | ||
| Red Hat | Red Hat Enterprise Linux 9 | any |
unaffected |
any |
unaffected |
I. Basic Information for CVE-2023-32256
Vulnerability Information
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Vulnerability Title
Kernel: ksmbd race issue from smb2 close and logoff with multichannel
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
当访问候选通道时的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
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ksmbd组件存在竞争条件问题，可能导致释放后重用。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | - | 0 ~ 5.15.145 | - |
|
| Red Hat | Red Hat Enterprise Linux 10 | - |
cpe:/o:redhat:enterprise_linux:10
|
|
| Red Hat | Red Hat Enterprise Linux 6 | - |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
| Red Hat | Red Hat Enterprise Linux 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
II. Public POCs for CVE-2023-32256
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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V. Comments for CVE-2023-32256
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