Skip to content
CVE Ledger
  • Newest CVEsPage
  • Recently added to KEVPage
  • Rising exploitation (EPSS)Page
  • Weekly digestPage
  • StatisticsPage
  • WatchlistPage
  • API docsPage
  • MCP serverPage
  • AboutPage
  • Data sourcesPage
  • Data statusPage
  • ChangelogPage
  • How it's builtPage
  • Support the projectPage

14 results

Back

CVE-2023-3609Use-after-free in Linux kernel's net/sched: cls_u32 component

Description

A use-after-free vulnerability in the Linux kernel's net/sched: cls_u32 component can be exploited to achieve local privilege escalation. If tcf_change_indev() fails, u32_set_parms() will immediately return an error after incrementing or decrementing the reference counter in tcf_bind_filter(). If an attacker can control the reference counter and set it to zero, they can cause the reference to be freed, leading to a use-after-free vulnerability. We recommend upgrading past commit 04c55383fa5689357bcdd2c8036725a55ed632bc.

Timeline

  1. ID reserved

    By Google

  2. · 11 days later

    Published

  3. · 3 years later

    Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2023-3609, by who scored it
Scored byCVSSScoreVector
GoogleCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVDNVD · Modified3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS (exploitation in 30 days)
0.49% · top 58% of all CVEs (14 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.8.

Affected products

  • Linux · Kernel

    • affected 4.14.0 – < 4.14.322
    • affected 4.15.0 – < 4.19.291
    • affected 4.20.0 – < 5.4.248
    • affected 5.5.0 – < 5.10.185
    • affected 5.11.0 – < 5.15.118
    • affected 5.16.0 – < 6.1.35
    • affected 6.2.0 – < 6.3.9
    • unaffected 6.4.0
    • unaffected 04c55383fa5689357bcdd2c8036725a55ed632bc

References

References10

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2023-3609 badge
[![CVE-2023-3609](https://cveledger.app/badge/CVE-2023-3609.svg)](https://cveledger.app/cve/CVE-2023-3609)

Record last updated .