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CVE-2023-53733— net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode

Quick assessment

Affected
Linux Linux
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u32_replace_hw_knode失败时未撤销tcf_bind_filter操作。

CVSS 7.8 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation

Affected Version Matrix 8

VendorProduct Version RangeStatus
Linux Linux d34e3e181395192d6d1f50dd97bd7854e04e33a4< a9345793469b65ee5ba7b033239916c2a67d3dd4 affected
d34e3e181395192d6d1f50dd97bd7854e04e33a4< 025159ed118ba5145b241d574edadb0e00d3c20f affected
d34e3e181395192d6d1f50dd97bd7854e04e33a4< 9cb36faedeafb9720ac236aeae2ea57091d90a09 affected
4.7 affected
< 4.7 unaffected
6.1.42≤ 6.1.* unaffected
6.4.7≤ 6.4.* unaffected
6.5≤ * unaffected
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I. Basic Information for CVE-2023-53733

Vulnerability Information
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Vulnerability Title
net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: sched: cls_u32: Undo tcf_bind_filter if u32_replace_hw_knode When u32_replace_hw_knode fails, we need to undo the tcf_bind_filter operation done at u32_set_parms.
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
N/A
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u32_replace_hw_knode失败时未撤销tcf_bind_filter操作。
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 d34e3e181395192d6d1f50dd97bd7854e04e33a4 ~ a9345793469b65ee5ba7b033239916c2a67d3dd4 -
Linux Linux 4.7 -

II. Public POCs for CVE-2023-53733

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III. Intelligence Information for CVE-2023-53733

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Same Patch Batch · Linux · 2025-10-24 · 8 CVEs total

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CVE-2025-40024 7.8 HIGH vhost: Take a reference on the task in struct vhost_task.
CVE-2025-40019 crypto: essiv - Check ssize for decryption and in-place encryption
CVE-2025-40020 can: peak_usb: fix shift-out-of-bounds issue
CVE-2025-40021 tracing: dynevent: Add a missing lockdown check on dynevent
CVE-2025-40022 crypto: af_alg - Fix incorrect boolean values in af_alg_ctx
CVE-2025-40023 drm/xe/vf: Don't expose sysfs attributes not applicable for VFs

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2023-53733

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