CVE-2026-43060

netfilter: nft_ct: drop pending enqueued packets on removal

HIGH
7.8
CVSS Score
Published: May 5, 2026 at 03:17 PM UTC
Updated: October 19, 2026 at 08:18 PM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.1%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_ct: drop pending enqueued packets on removal Packets sitting in nfqueue might hold a reference to: - templates that specify the conntrack zone, because a percpu area is used and module removal is possible. - conntrack timeout policies and helper, where object removal leave a stale reference. Since these objects can just go away, drop enqueued packets to avoid stale reference to them. If there is a need for finer grain removal, this logic can be revisited to make selective packet drop upon dependencies.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.19 ≤ v < 5.10.2535.11 ≤ v < 5.15.2035.16 ≤ v < 6.1.1676.13 ≤ v < 6.18.206.19 ≤ v < 6.19.106.2 ≤ v < 6.6.1306.7 ≤ v < 6.12.784.197.07.0 rc17.0 rc27.0 rc37.0 rc47e0b2b57f01d183e1c84114f1f2287737358d748
Vendor states this is fixed in 36eae0956f659e48d5366d9b083d9417f3263ddc (fixed)
Vendor states this is fixed in 3da0b946835f33bf36b459ead764c61a761e689b (fixed)
Vendor states this is fixed in 6802ff8beceb9c4254318e81c1395720438f2cc2 (fixed)
Vendor states this is fixed in 77da55dee67720e2b8d2db49a53334e6c017ee7b (fixed)
Vendor states this is fixed in 8a64e76933672b08bd85b63086f33432070fd729 (fixed)
Vendor states this is fixed in ab50302190b303f847c4eba0e31a01a56dec596e (fixed)
Vendor states this is fixed in e68a8db3a0546482b34e9ca5ca886bcf73eb37bb (fixed)
Vendor states this is fixed in f29a055e4f593e577805b41228b142b58f48df1b (fixed)
Vendor states this is fixed in 4.19 (unaffected)
Vendor states this is fixed in 5.10.253 (unaffected)
Vendor states this is fixed in 5.15.203 (unaffected)
Vendor states this is fixed in 6.1.167 (unaffected)
Vendor states this is fixed in 6.12.78 (unaffected)
Vendor states this is fixed in 6.18.20 (unaffected)
Vendor states this is fixed in 6.19.10 (unaffected)
Vendor states this is fixed in 6.6.130 (unaffected)
Vendor states this is fixed in 7.0 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfoCWE-416

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