Medium severity5.5NVD Advisory· Published Jan 11, 2022· Updated Jun 17, 2026

CVE-2021-46283

Description

nf_tables_newset in net/netfilter/nf_tables_api.c in the Linux kernel before 5.12.13 allows local users to cause a denial of service (NULL pointer dereference and general protection fault) because of the missing initialization for nft_set_elem_expr_alloc. A local user can set a netfilter table expression in their own namespace.

AI Insight

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

Affected products

Linux/Linux kerneldescription
Linux/Kernelllm-fuzzy
Range: <5.12.13
osv-coords43 versions
pkg:rpm/opensuse/dtb-aarch64&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-64kb&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-debug&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-default-base&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-default&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-docs&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-kvmsmall&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-obs-build&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-obs-qa&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-preempt&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-source-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-source&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-syms-azure&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-syms&distro=openSUSE%20Leap%2015.3 pkg:rpm/opensuse/kernel-zfcpdump&distro=openSUSE%20Leap%2015.3 pkg:rpm/suse/kernel-64kb&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/kernel-default-base&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20High%20Availability%20Extension%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Legacy%2015%20SP3 pkg:rpm/suse/kernel-default&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3 pkg:rpm/suse/kernel-docs&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-livepatch-SLE15-SP3_Update_12&distro=SUSE%20Linux%20Enterprise%20Live%20Patching%2015%20SP3 pkg:rpm/suse/kernel-obs-build&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-preempt&distro=SUSE%20Linux%20Enterprise%20Workstation%20Extension%2015%20SP3 pkg:rpm/suse/kernel-rt_debug&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-rt&distro=SUSE%20Linux%20Enterprise%20Micro%205.1 pkg:rpm/suse/kernel-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-source-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3 pkg:rpm/suse/kernel-source&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-source-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-syms-azure&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Public%20Cloud%2015%20SP3 pkg:rpm/suse/kernel-syms&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP3 pkg:rpm/suse/kernel-syms-rt&distro=SUSE%20Real%20Time%20Module%2015%20SP3 pkg:rpm/suse/kernel-zfcpdump&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3
< 5.3.18-150300.59.43.1+ 42 more
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.38.37.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1.150300.18.27.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.38.37.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.38.37.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.38.37.1
- (no CPE)range: < 5.3.18-150300.59.43.1.150300.18.27.1
- (no CPE)range: < 5.3.18-150300.59.43.1.150300.18.27.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 1-150300.7.3.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.71.1
- (no CPE)range: < 5.3.18-150300.71.1
- (no CPE)range: < 5.3.18-150300.71.1
- (no CPE)range: < 5.3.18-150300.38.37.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.71.1
- (no CPE)range: < 5.3.18-150300.38.37.1
- (no CPE)range: < 5.3.18-150300.59.43.1
- (no CPE)range: < 5.3.18-150300.71.1
- (no CPE)range: < 5.3.18-150300.59.43.1

Patches

Vulnerability mechanics

References

git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdPatchVendor Advisory
cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.13nvdRelease NotesVendor Advisory
syzkaller.appspot.com/bugnvdThird Party Advisory

News mentions

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cvss	0.358
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000