01 Record

CVE-2026-23278

netfilter: nf_tables: always walk all pending catchall elements

HighPUBLISHEDCNA: Linux

CNA base score7.8 CVSS v3.xCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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02 Description

netfilter: nf_tables: always walk all pending catchall elements

03 Exploitation and scoring

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

0.22% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 12.4% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-10-19.

Red Hat severity

Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published

2026-03-20 08:08Z7 MO AGO

Last updated

2026-10-19 18:35Z10 DAYS AGO

Reserved

2026-01-13

Assigning CNA

Linux

Record state

PUBLISHED

Severity

High (CVSS 7.8)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-416Use After FreeVariant
CWE-459Incomplete CleanupBase

Data version

5.2

Document digest

03f9b15af9d5f8123b511aff7e0091dbad9c2ecce022c981924c1be82ed86400

05 Affected products

VendorProductVersionsPlatforms

LinuxLinuxd60be2da67d172aecf866302c91ea11533eca4d9 to < c4d4e86fda707d89eaba80e343321737375f8582, 628bd3e49cba1c066228e23d71a852c23e26da73 to < 4830fb44d12f586f3f544609e086933649a9175a, 628bd3e49cba1c066228e23d71a852c23e26da73 to < eb0948fa13298212c5f8b30ee48efdae4389ab09, 628bd3e49cba1c066228e23d71a852c23e26da73 to < de47a88c6b807910f05703fb6605f7efdaa11417, 628bd3e49cba1c066228e23d71a852c23e26da73 to < 77c26b5056d693ffe5e9f040e946251cdb55ae55, 628bd3e49cba1c066228e23d71a852c23e26da73 to < 7cb9a23d7ae40a702577d3d8bacb7026f04ac2a9, bc9f791d2593f17e39f87c6e2b3a36549a3705b1, 3c7ec098e3b588434a8b07ea9b5b36f04cef1f50, a136b7942ad2a50de708f76ea299ccb45ac7a7f9, 25aa2ad37c2162be1c0bc4fe6397f7e4c13f00f8, dc7cdf8cbcbf8b13de1df93f356ec04cdeef5c41, 6.1.36 to < 6.1.177, 4.19.316 to < 4.20, 5.4.262 to < 5.5, 5.10.188 to < 5.11, 5.15.121 to < 5.16, 6.3.10 to < 6.4, 6.4—

06 References

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

07 Fixed in

Debian 12

linux
Fixed in 6.1.177-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

linux
Fixed in 6.12.85-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

linux
Fixed in 6.19.10-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.