CVE-2022-25636

Exp

net/netfilter/nf_dup_netdev.c in the Linux kernel 5.4 through 5.6.10 allows local users to gain privileges because of a heap out-of-bounds write. This is related to nf_tables_offload.

Published: 2022-02-24 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-25636 is rated High Exploit Risk (77.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.63%). 3 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +2.18% over the last day, indicating growing attacker interest. Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-25636

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-25636

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.45% 2.63% +2.18%
2 2026-05-26 0.40% 0.45% +0.06%
3 2026-02-25 — 0.40% —

Full EPSS history (21 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-25636

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]
6.9 2.0 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 3.4 10.0 [email protected]

Weakness enumeration for CVE-2022-25636

OS Trackers for CVE-2022-25636

vendor priority summary link
debian not yet assigned CVE-2022-25636 not yet assigned priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2022-25636
redhat high — https://access.redhat.com/security/cve/CVE-2022-25636
suse high — https://www.suse.com/security/cve/CVE-2022-25636/
ubuntu high CVE-2022-25636 high priority: Ubuntu including 167 source packages (linux, linux-allwinner, …), 2042 status rows across 15 suites (bionic, focal, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1576, not-affected 221, released 192, ignored 53. https://ubuntu.com/security/CVE-2022-25636

Affected software / configurations for CVE-2022-25636

Vendor Product Version Raw CPE
linux linux_kernel >= 5.4, < 5.4.182 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.5, < 5.10.103 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.11, < 5.15.26 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
linux linux_kernel >= 5.16, < 5.16.12 cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
debian debian_linux 11.0 cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
netapp h300e — cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
netapp h300s — cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
netapp h410c — cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
netapp h410s — cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
netapp h500e — cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
netapp h500s — cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
netapp h700e — cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
netapp h700s — cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
oracle communications_cloud_native_core_binding_support_function 22.1.3 cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*
oracle communications_cloud_native_core_network_exposure_function 22.1.1 cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1:*:*:*:*:*:*:*
oracle communications_cloud_native_core_policy 22.2.0 cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0:*:*:*:*:*:*:*

References for CVE-2022-25636

URL Tags
http://packetstormsecurity.com/files/166444/Kernel-Live-Patch-Security-Notice-LSN-0085-1.html Third Party Advisory VDB Entry
http://www.openwall.com/lists/oss-security/2022/02/22/1 Mailing List Patch Third Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git/commit/?id=b1a5983f56e371046dcf164f90bfaf704d2b89f6 Patch Vendor Advisory
https://github.com/Bonfee/CVE-2022-25636 Exploit Third Party Advisory
https://nickgregory.me/linux/security/2022/03/12/cve-2022-25636/ Exploit Third Party Advisory
https://security.netapp.com/advisory/ntap-20220325-0002/ Third Party Advisory
https://www.debian.org/security/2022/dsa-5095 Third Party Advisory
https://www.openwall.com/lists/oss-security/2022/02/21/2 Exploit Mailing List Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html Patch Third Party Advisory
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