CVE-2026-23278netfilter: nf_tables: always walk all pending catchall elements
Updated under an hour ago ()
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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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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)
- Not given
- 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 16, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
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
- https://git.kernel.org/stable/c/c4d4e86fda707d89eaba80e343321737375f8582
- https://git.kernel.org/stable/c/4830fb44d12f586f3f544609e086933649a9175a
- https://git.kernel.org/stable/c/eb0948fa13298212c5f8b30ee48efdae4389ab09patch
- https://git.kernel.org/stable/c/de47a88c6b807910f05703fb6605f7efdaa11417patch
- https://git.kernel.org/stable/c/77c26b5056d693ffe5e9f040e946251cdb55ae55patch
- https://git.kernel.org/stable/c/7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9patch
- 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.