CVE-2026-23278

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Source
https://cve.org/CVERecord?id=CVE-2026-23278
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23278.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-23278
Downstream
Related
Published
2026-03-20T08:08:58.566Z
Modified
2026-05-15T04:14:26.577368777Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
netfilter: nf_tables: always walk all pending catchall elements
Details

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nf_tables: always walk all pending catchall elements

During transaction processing we might have more than one catchall element: 1 live catchall element and 1 pending element that is coming as part of the new batch.

If the map holding the catchall elements is also going away, its required to toggle all catchall elements and not just the first viable candidate.

Otherwise, we get: WARNING: ./include/net/netfilter/nftables.h:1281 at nftdatarelease+0xb7/0xe0 [nftables], CPU#2: nft/1404 RIP: 0010:nftdatarelease+0xb7/0xe0 [nf_tables] [..] _nftsetelemdestroy+0x106/0x380 [nftables] nftablesabortrelease+0x348/0x8d0 [nftables] nftablesabort+0xcf2/0x3ac0 [nftables] nfnetlinkrcvbatch+0x9c9/0x20e0 [..]

Database specific 
{
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23278.json"
}
References

Affected packages

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.4.0
Fixed
6.12.78
Type
ECOSYSTEM
Events
Introduced
6.13.0
Fixed
6.18.19
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
6.19.9

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-23278.json"