High severity7.8NVD Advisory· Published Mar 20, 2026· Updated May 22, 2026

CVE-2026-23278

Description

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 [..]

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Linux/Kernel4 versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=4.19.316,<4.20
- cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
Ubuntu/Linux Kernelllm-fuzzy
osv-coords37 versions
pkg:linux/kernel pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-rt&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2016.0 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Micro%206.2 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Micro%206.2 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Micro%206.2 pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-kvmsmall&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_12&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6 pkg:rpm/suse/kernel-livepatch-SLE15-SP6_Update_18&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP6 pkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_11&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7 pkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_1&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7 pkg:rpm/suse/kernel-livepatch-SLE15-SP7-RT_Update_8&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP7 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Micro%206.2 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.0 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Micro%206.2 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Linux%20Micro%206.1 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP7
>= 6.4.0, < 6.12.78+ 36 more
- (no CPE)range: >= 6.4.0, < 6.12.78
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.27.1.160000.2.8
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.4.0-41.1.21.18
- (no CPE)range: < 6.4.0-41.1.21.18
- (no CPE)range: < 6.12.0-160000.27.1.160000.2.8
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 19-150600.2.1
- (no CPE)range: < 8-150600.2.1
- (no CPE)range: < 1-150700.1.3.1
- (no CPE)range: < 18-150700.2.1
- (no CPE)range: < 8-150700.2.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.4.0-150700.7.37.2
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.12.0-160000.28.1
- (no CPE)range: < 6.4.0-41.1
- (no CPE)range: < 6.4.0-150700.7.37.2
- (no CPE)range: < 6.4.0-150700.7.37.1

Patches

Vulnerability mechanics

References

News mentions

New Linux Kernel Vulnerability Lets Attackers Escalate Privileges to Root
Cyber Security News · Jun 8, 2026

cvss	0.507
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000