Review reviewHigh

CVE-2023-53733

Linux

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.

CVSS
7.8
EPSS
0.14%
3.97% percentile
CISA KEV
Not listed
Published
2025.10.24
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.14%
Technical severityCVSS 7.8

Vulnerability overview

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.

Affected product and versions

Product
Linux
Affected versions
>= d34e3e181395192d6d1f50dd97bd7854e04e33a4 < a9345793469b65ee5ba7b033239916c2a67d3dd4, >= d34e3e181395192d6d1f50dd97bd7854e04e33a4 < 025159ed118ba5145b241d574edadb0e00d3c20f, >= d34e3e181395192d6d1f50dd97bd7854e04e33a4 < 9cb36faedeafb9720ac236aeae2ea57091d90a09, >= 4.7
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Linux and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Not available
CVE-2023-53733 — Linux | SECUFOCUS NOW