CVE-2023-1281

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2023-03-22. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git commit ee059170b1f7e94e55fa6cadee544e176a6e59c2.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
35(Track)
EG Risk 35/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity78% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS
23.0%
KEV
Not listed

Published

March 22, 2023

Last Modified

February 13, 2025

References (12)

Vendor Advisories for CVE-2023-1281(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(24)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulinux-tools-intel-iotg (5.15.0.1028.27) @ jammy2026-05-25ubuntu
ubuntulinux-headers-bluefield (5.4.0.1062.57) @ focal2026-05-25ubuntu
ubuntulinux-headers-generic-64k-hwe-20.04-edge (5.15.0.70.77~20.04.31) @ focal2026-05-25ubuntu
ubuntulinux-buildinfo-6.1.0-1008-oem (6.1.0-1008.8) @ jammy2026-05-25ubuntu
ubuntulinux-oem-6.0-headers-6.0.0-1013 (6.0.0-1013.13) @ jammy2026-05-25ubuntu
ubuntulinux-image-lowlatency (5.19.0.1022.18) @ kinetic2026-05-25ubuntu
ubuntulowlatency-4.15 (4.15.0-69) @ xenial2026-05-25ubuntu
ubuntulinux-modules-5.15.0-1028-ibm (5.15.0-1028.31) @ jammy2026-05-25ubuntu
ubuntulinux-image-virtual-hwe-18.04-edge (5.4.0.147.145) @ focal2026-05-25ubuntu
ubuntulinux-tools-aws-hwe (4.15.0.1154.137) @ xenial2026-05-25ubuntu
ubuntulinux-snapdragon-headers-4.15.0-1148 (4.15.0-1148.158) @ bionic2026-05-25ubuntu
ubuntulinux-tools-iot (5.4.0.1017.15) @ focal2026-05-25ubuntu
ubuntulinux-headers-5.4.0-1024-xilinx-zynqmp (5.4.0-1024.28) @ focal2026-05-25ubuntu
ubuntulinux-image-5.15.0-1030-intel-iotg (5.15.0-1030.35~20.04.1) @ focal2026-05-25ubuntu
ubuntulinux-oem-22.04a (5.17.0.1030.28) @ jammy2026-05-25ubuntu
redhatkernel-0:4.18.0-477.21.1.el8_82023-08-08redhat
redhatkernel-rt-0:4.18.0-477.21.1.rt7.284.el8_82023-08-08redhat
redhatkpatch-patch2023-08-08redhat
redhatkernel-rt-0:4.18.0-305.97.1.rt7.172.el8_42023-07-25redhat
redhatkernel-0:4.18.0-305.97.1.el8_42023-07-25redhat
redhatkernel-rt-0:4.18.0-193.109.1.rt13.160.el8_22023-07-18redhat
redhatkernel-0:4.18.0-372.64.1.el8_62023-07-18redhat
redhatkernel-0:4.18.0-193.109.1.el8_22023-07-18redhat
redhatkernel-0:4.18.0-147.85.1.el8_12023-06-27redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Additional Vendor Advisories

(23)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 14× in last 7d / 49× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 105 total refreshes for this CVE.

  1. 2026-07-23 02:17 UTCEG score recompute
  2. 2026-07-22 23:05 UTCEG score recompute
  3. 2026-07-22 14:06 UTCEPSS rescore
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Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2023-1281?
CVE-2023-1281 is a high vulnerability published on March 22, 2023. Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-after-free when 'tcfextsexec()' is called with the destroyed tcf_ext. A local attacker user…
When was CVE-2023-1281 disclosed?
CVE-2023-1281 was first published in the National Vulnerability Database on March 22, 2023, with the most recent update on February 13, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2023-1281 actively exploited?
CVE-2023-1281 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 23.0% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2023-1281?
CVE-2023-1281 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2023-1281?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2023-1281, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2023-1281

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