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CVE-2023-3397— Kernel: slab-use-after-free write in txend due to race condition

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 6
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，该漏洞源于函数lmLogClose和txEnd存在条件竞争漏洞。本地攻击者可利用该漏洞使系统崩溃或泄露内部内核信息。

CVSS 7.0 · High EPSS 0.21% · P10
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I. Basic Information for CVE-2023-3397

Vulnerability Information
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Vulnerability Title
Kernel: slab-use-after-free write in txend due to race condition
Source: CVE Program / CVE List V5
Vulnerability Description
A race condition occurred between the functions lmLogClose and txEnd in JFS, in the Linux Kernel, executed in different threads. This flaw allows a local attacker with normal user privileges to crash the system or leak internal kernel information.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/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 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，该漏洞源于函数lmLogClose和txEnd存在条件竞争漏洞。本地攻击者可利用该漏洞使系统崩溃或泄露内部内核信息。
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
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-2023-3397

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III. Intelligence Information for CVE-2023-3397

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Vendor Advisories for CVE-2023-3397 (2)

Other References for CVE-2023-3397 (1)

Same Patch Batch · Red Hat · 2023-11-01 · 4 CVEs total

CVE-2023-5178 8.8 HIGH Kernel: use after free in nvmet_tcp_free_crypto in nvme
CVE-2023-3972 7.8 HIGH Insights-client: unsafe handling of temporary files and directories
CVE-2023-5625 5.3 MEDIUM Python-eventlet: patch regression for cve-2021-21419 in some red hat builds

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 6
Same vendor: Red Hat
Same weakness: CWE-416

V. Comments for CVE-2023-3397

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