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CVE-2023-1829— Use-after-free in tcindex (traffic control index filter) in the Linux Kernel

Quick assessment

Affected
Linux Linux Kernel
Exploitation
Public or AI PoC available; prioritize validation
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，该漏洞源于存在释放后重用漏洞，攻击者利用该漏洞可以实现本地权限提升。

CVSS 7.8 · High EPSS 1.06% · P63

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 9

VendorProduct Version RangeStatus
Linux Linux Kernel 3.8.0< 4.14.308 affected
4.15.0< 4.19.276 affected
4.20.0< 5.4.235 affected
5.5.0< 5.10.173 affected
5.11.0< 5.15.100 affected
5.16.0< 6.1.18 affected
6.2.0< 6.2.5 affected
6.3.0 unaffected
… +1 more rows
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I. Basic Information for CVE-2023-1829

Vulnerability Information
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Vulnerability Title
Use-after-free in tcindex (traffic control index filter) in the Linux Kernel
Source: CVE Program / CVE List V5
Vulnerability Description
A use-after-free vulnerability in the Linux Kernel traffic control index filter (tcindex) can be exploited to achieve local privilege escalation. The tcindex_delete function which does not properly deactivate filters in case of a perfect hashes while deleting the underlying structure which can later lead to double freeing the structure. A local attacker user can use this vulnerability to elevate its privileges to root. We recommend upgrading past commit 8c710f75256bb3cf05ac7b1672c82b92c43f3d28 https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ .
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，该漏洞源于存在释放后重用漏洞，攻击者利用该漏洞可以实现本地权限提升。
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
Linux Linux Kernel 3.8.0 ~ 4.14.308 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2023-1829

# POC Description Source Link Shenlong Link
1 None https://github.com/lanleft/CVE-2023-1829 POC Details
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III. Intelligence Information for CVE-2023-1829

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Patches & Fixes for CVE-2023-1829 (1)

Vendor Advisories for CVE-2023-1829 (1)

Mailing List Discussions for CVE-2023-1829 (2)

Other References for CVE-2023-1829 (1)

IV. Related Vulnerabilities

Same product: Linux Kernel
Same vendor: Linux
Same weakness: CWE-416

V. Comments for CVE-2023-1829

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