An issue was discovered in the Linux kernel through 5.18.9.
Priority MEDIUM 42CWE-843Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-843 and the CVSS impact.
Summary
An issue was discovered in the Linux kernel through 5.18.9. A type confusion bug in nft_set_elem_init (leading to a buffer overflow) could be used by a local attacker to escalate privileges, a different vulnerability than CVE-2022-32250. (The attacker can obtain root access, but must start with an unprivileged user namespace to obtain CAP_NET_ADMIN access.) This can be fixed in nft_setelem_parse_data in net/netfilter/nf_tables_api.c.
Why it matters now
EPSS 0.05451 92nd percentileScored 2026-11-07
Public exploit Yes 4 exploit referencesTagged by NVD
Fix Fixed Red Hat: 3 advisories
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 4.1 to before 4.14.316; 4.15 to before 4.19.284; 4.20 to before 5.4.244; 5.5 to before 5.10.130; 5.11 to before 5.15.54; 5.16 to before 5.18.11 | Vulnerable | Linux |
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | 11.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | 14.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* | 16.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | 18.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* | 20.04 | Vulnerable | Canonical |
| cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:* | 22.04 | Vulnerable | Canonical |
| cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 4.1 to before 4.14.316; 4.15 to before 4.19.284; 4.20 to before 5.4.244; 5.5 to before 5.10.130; 5.11 to before 5.15.54; 5.16 to before 5.18.11 Vulnerable ·Linux
- cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* Versions 11.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* Versions 16.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* Versions 20.04 Vulnerable ·Canonical
- cpe:2.3:o:canonical:ubuntu_linux:22.04:*:*:*:lts:*:*:* Versions 22.04 Vulnerable ·Canonical
- cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
| cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | NetApp |
| cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* | not specified by NVD | Running on | NetApp |
- cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
- cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·NetApp
- cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·NetApp
Remediation
Red Hat 3 advisories
- RHSA-2022:6610 Released 2022-09-20 · Red Hat rating Importantkernel security, bug fix, and enhancement update
- Red Hat CodeReady Linux Builder (v. 9) kernel-tools-libs-devel-5.14.0-70.26.1.el9_0
- Red Hat Enterprise Linux AppStream (v. 9) kernel-debug-devel-5.14.0-70.26.1.el9_0, kernel-debug-devel-matched-5.14.0-70.26.1.el9_0, kernel-devel-5.14.0-70.26.1.el9_0 +5
- Red Hat Enterprise Linux BaseOS (v. 9) bpftool-5.14.0-70.26.1.el9_0, kernel-5.14.0-70.26.1.el9_0, kernel-abi-stablelists-5.14.0-70.26.1.el9_0 +14
- RHSA-2022:6582 Released 2022-09-20 · Red Hat rating Importantkernel-rt security and bug fix update
- Red Hat Enterprise Linux Real Time (v. 9) kernel-rt-5.14.0-70.26.1.rt21.98.el9_0, kernel-rt-core-5.14.0-70.26.1.rt21.98.el9_0, kernel-rt-debug-5.14.0-70.26.1.rt21.98.el9_0 +7
- Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt-5.14.0-70.26.1.rt21.98.el9_0, kernel-rt-core-5.14.0-70.26.1.rt21.98.el9_0, kernel-rt-debug-5.14.0-70.26.1.rt21.98.el9_0 +9
- RHSA-2022:6592 Released 2022-09-20 · Red Hat rating Importantkpatch-patch security update
- Red Hat Enterprise Linux BaseOS (v. 9) kpatch-patch-5_14_0-70_13_1-1-2.el9_0, kpatch-patch-5_14_0-70_17_1-1-1.el9_0, kpatch-patch-5_14_0-70_22_1-1-1.el9_0
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat CodeReady Linux Builder (v. 9) | Fixed | RHSA-2022:6610 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2022:6610 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2022:6592, RHSA-2022:6610 |
| Red Hat Enterprise Linux Real Time (v. 9) | Fixed | RHSA-2022:6582 |
| Red Hat Enterprise Linux Real Time for NFV (v. 9) | Fixed | RHSA-2022:6582 |
Not affected: 3 products
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2022-34918
- 2026-10-03 Alias added: GHSA-9v26-h3ph-p8v7
- 2026-10-16 Affected versions changed · Red Hat
References
Exploit 4
- https://www.openwall.com/lists/oss-security/2022/07/02/3
- [oss-security] 20220705 Re: Linux kernel: Netfilter heap buffer overflow in nft_set_elem_init
- https://www.randorisec.fr/crack-linux-firewall/
- http://packetstormsecurity.com/files/168543/Netfilter-nft_set_elem_init-Heap-Overflow-Privilege-Escalation.html
Advisory 4
Sources
- CVE-2022-34918 · CVE Program
- CVE-2022-34918 · NVD
- FIRST EPSS
- GHSA-9v26-h3ph-p8v7 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-34918 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences