HOMEVULNERABILITIESCVE-2018-25020
HIGH

CVE-2018-25020

CWE-120Published: December 8, 2021· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

The BPF subsystem in the Linux kernel before 4.17 mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions, leading to an overflow. This affects kernel/bpf/core.c and net/core/filter.c.

NVD Source

Technical Analysis

CVE-2018-25020 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

Linux1 product(s)
linux kernel
netapp17 product(s)
cloud backuph410c firmwareh410ch300s firmwareh300sh500s firmwareh500sh700s firmwareh700sh300e firmwareh300eh500e firmware+5
Source: NVD CPE · 18 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/torvalds/linux/commit/050fad7c4534c13c8eb1d9c2ba66012e014773cb
PATCHhttps://github.com/torvalds/linux/commit/050fad7c4534c13c8eb1d9c2ba66012e014773cb
ADVISORYhttp://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20211229-0005/
ADVISORYhttp://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20211229-0005/

All References (6)

→
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.htmlThird Party Advisory · VDB Entry
→
https://github.com/torvalds/linux/commit/050fad7c4534c13c8eb1d9c2ba66012e014773cbPatch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20211229-0005/Third Party Advisory
→
http://packetstormsecurity.com/files/165477/Kernel-Live-Patch-Security-Notice-LSN-0083-1.htmlThird Party Advisory · VDB Entry
→
https://github.com/torvalds/linux/commit/050fad7c4534c13c8eb1d9c2ba66012e014773cbPatch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20211229-0005/Third Party Advisory

Quick Facts

CVE IDCVE-2018-25020
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-120
CISA KEVNo
Affected2 vendor(s)
PublishedDec 8, 2021

Related CVEs (CWE-120)

CVE-1999-0385
10.0
CVE-2012-10035
10.0
CVE-1999-0046
10.0
CVE-2001-0554
10.0
CVE-2022-22570
10.0
CVE-2022-20827
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2018-25020 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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