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CVE-2022-34918

HIGH
7.8
CVSS Score
Published: July 4, 2022 at 08:07 PM UTC
Updated: October 14, 2026 at 05:17 PM UTC
8 products affected across 4 vendorsLinux KernelDebian LinuxUbuntu Linux· also runs on 5 platforms

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Severity
HIGH7.8
Exploit prediction
EPSS 5%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
14.0416.0418.0420.0422.04
Debian Linux· Debiandrupal
95%
11.0
Linux Kernel· Linux
95%
4.1 ≤ v < 4.14.3164.15 ≤ v < 4.19.2844.20 ≤ v < 5.4.2445.11 ≤ v < 5.15.545.16 ≤ v < 5.18.115.5 ≤ v < 5.10.130
Affected range stops below 4.14.316, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.19.284, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.10.130, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.15.54, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.18.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 5.4.244, so it looks safe — our inference, not a vendor statement
H300S Firmware· NetAppdrupal
95%
All versions
netapp-h300s (same device)
H410C Firmware· NetAppdrupal
95%
All versions
netapp-h410c (same device)
H410S Firmware· NetAppdrupal
95%
All versions
netapp-h410s (same device)
H500S Firmware· NetAppdrupal
95%
All versions
netapp-h500s (same device)
H700S Firmware· NetAppdrupal
95%
All versions
netapp-h700s (same device)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (12)

x_refsource_MISCThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.html
x_refsource_MISCExploitThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/168543/Netfilter-nft_set_elem_init-Heap-Overflow-Privilege-Escalation.html
Mailing Listx_refsource_MLISTExploitThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/07/05/1
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2022/08/06/5
x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git/commit/?id=7e6bc1f6cabcd30aba0b11219d8e01b952eacbb6
x_refsource_MISC
Source: [email protected]
https://lore.kernel.org/netfilter-devel/cd9428b6-7ffb-dd22-d949-d86f4869f452%40randorisec.fr/T/#u
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://security.netapp.com/advisory/ntap-20220826-0004/
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2022/dsa-5191

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-843

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