High 7.8Published Mar 20, 2026

CVE-2026-23278netfilter: nf_tables: always walk all pending catchall elements

Updated under an hour ago (Oct 27, 2026, 10:00 PM ET)

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It affects Linux and 2 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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/nf_tables.h:1281 at nft_data_release+0xb7/0xe0 [nf_tables], CPU#2: nft/1404 RIP: 0010:nft_data_release+0xb7/0xe0 [nf_tables] [..] __nft_set_elem_destroy+0x106/0x380 [nf_tables] nf_tables_abort_release+0x348/0x8d0 [nf_tables] nf_tables_abort+0xcf2/0x3ac0 [nf_tables] nfnetlink_rcv_batch+0x9c9/0x20e0 [..]

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Modified
Record last updated: Oct 19, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from d60be2da67d172aecf866302c91ea11533eca4d9 before c4d4e86fda707d89eaba80e343321737375f8582; from 628bd3e49cba1c066228e23d71a852c23e26da73 before 4830fb44d12f586f3f544609e086933649a9175a; from 628bd3e49cba1c066228e23d71a852c23e26da73 before eb0948fa13298212c5f8b30ee48efdae4389ab09; from 628bd3e49cba1c066228e23d71a852c23e26da73 before de47a88c6b807910f05703fb6605f7efdaa11417; 628bd3e49cba1c066228e23d71a852c23e26da73 builds before 77c26b5056d693ffe5e9f040e946251cdb55ae55; 628bd3e49cba1c066228e23d71a852c23e26da73 builds before 7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9; bc9f791d2593f17e39f87c6e2b3a36549a3705b1; 3c7ec098e3b588434a8b07ea9b5b36f04cef1f50; and 9 more ranges	CNA record
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem siemens:simatic_s7_1500_tm_mfp_gnu_linux_subsystem (from the name)	all versions	CISA ADP
linux linux_kernel linux:linux_kernel	from 4.19.316 before 4.20; from 5.4.262 before 5.5; from 5.10.188 before 5.11; from 5.15.121 before 5.16; from 6.1.36 before 6.2; from 6.3.10 before 6.4; from 6.4.1 before 6.12.78; from 6.13 before 6.18.19; and 4 more ranges	NVD

References

References

https://git.kernel.org/stable/c/c4d4e86fda707d89eaba80e343321737375f8582
https://git.kernel.org/stable/c/4830fb44d12f586f3f544609e086933649a9175a
https://git.kernel.org/stable/c/eb0948fa13298212c5f8b30ee48efdae4389ab09	patch
https://git.kernel.org/stable/c/de47a88c6b807910f05703fb6605f7efdaa11417	patch
https://git.kernel.org/stable/c/77c26b5056d693ffe5e9f040e946251cdb55ae55	patch
https://git.kernel.org/stable/c/7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9	patch
https://cert-portal.siemens.com/productcert/html/ssa-784472.html

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.