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-2026-43329netfilter: flowtable: strictly check for maximum number of actions

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: strictly check for maximum number of actions The maximum number of flowtable hardware offload actions in IPv6 is: * ethernet mangling (4 payload actions, 2 for each ethernet address) * SNAT (4 payload actions) * DNAT (4 payload actions) * Double VLAN (4 vlan actions, 2 for popping vlan, and 2 for pushing) for QinQ. * Redirect (1 action) Which makes 17, while the maximum is 16. But act_ct supports for tunnels actions too. Note that payload action operates at 32-bit word level, so mangling an IPv6 address takes 4 payload actions. Update flow_action_entry_next() calls to check for the maximum number of supported actions. While at it, rise the maximum number of actions per flow from 16 to 24 so this works fine with IPv6 setups.

Timeline

  1. ID reserved

    By Linux

  2. · 7 days later

    Published

  3. · 5 months 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-2026-43329, by who scored it
Scored byCVSSScoreVector
LinuxCNA (assigner)3.1High7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
redhat-SADPADP (enrichment)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)
0.18% · top 93% of all CVEs (12 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 · Linux

    • affected c29f74e0df7a02b8303bcdce93a7c0132d62577a – < ead66c77303f760f6c30be96e2e20d5a77cef614
    • affected c29f74e0df7a02b8303bcdce93a7c0132d62577a – < fe9018d3e94329f1951b00805a8640bc06f56ead
    • affected c29f74e0df7a02b8303bcdce93a7c0132d62577a – < 5382bb03e9c33b089d60788478b922a2dca284cc
    • affected c29f74e0df7a02b8303bcdce93a7c0132d62577a – < 57c78bd2e2dd08897acd35b2bf8bcef322e36f5e
    • affected c29f74e0df7a02b8303bcdce93a7c0132d62577a – < 504c9456699dcf4d15195ef34a0fa94a80bfc877
    • affected c29f74e0df7a02b8303bcdce93a7c0132d62577a – < 879959a7a2be814dd57568655eafa3d8f4d0309e
    • affected c29f74e0df7a02b8303bcdce93a7c0132d62577a – < 76522fcdbc3a02b568f5d957f7e66fc194abb893

  • Linux · Linux

    • affected 5.5
    • unaffected < 5.5
    • unaffected 5.15.203 – ≤ 5.15.*
    • unaffected 6.1.168 – ≤ 6.1.*
    • unaffected 6.6.134 – ≤ 6.6.*
    • unaffected 6.12.81 – ≤ 6.12.*
    • unaffected 6.18.22 – ≤ 6.18.*
    • unaffected 6.19.12 – ≤ 6.19.*
    • unaffected 7.0 – ≤ *

References

References40

Sources

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

Badge for a README or a ticket

CVE-2026-43329 badge
[![CVE-2026-43329](https://cveledger.app/badge/CVE-2026-43329.svg)](https://cveledger.app/cve/CVE-2026-43329)

Record last updated .