HOMEVULNERABILITIESCVE-2020-12653
HIGH

CVE-2020-12653

CWE-787Published: May 5, 2020· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

An issue was found in Linux kernel before 5.5.4. The mwifiex_cmd_append_vsie_tlv() function in drivers/net/wireless/marvell/mwifiex/scan.c allows local users to gain privileges or cause a denial of service because of an incorrect memcpy and buffer overflow, aka CID-b70261a288ea.

NVD Source

Technical Analysis

CVE-2020-12653 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.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.

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

Debian1 product(s)
debian linux
Linux1 product(s)
linux kernel
netapp32 product(s)
active iq unified managercloud backupelement softwarehci management nodesolidfiresteelstore cloud integrated storagehci compute node firmwarehci compute nodea700s firmwarea700sh300s firmwareh300s+20
openSUSE1 product(s)
leap
Source: NVD CPE · 36 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://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4d
PATCHhttps://github.com/torvalds/linux/commit/b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4d
PATCHhttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4d
PATCHhttps://github.com/torvalds/linux/commit/b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4d
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
ADVISORYhttp://www.openwall.com/lists/oss-security/2020/05/08/2
ADVISORYhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.4
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200608-0001/
ADVISORYhttps://www.debian.org/security/2020/dsa-4698
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
ADVISORYhttp://www.openwall.com/lists/oss-security/2020/05/08/2
ADVISORYhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.4
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/06/msg00011.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/06/msg00013.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200608-0001/
ADVISORYhttps://www.debian.org/security/2020/dsa-4698

All References (20)

→
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlMailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/05/08/2Mailing List · Third Party Advisory
→
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.4Release Notes · Vendor Advisory
→
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4dPatch · Vendor Advisory
→
https://github.com/torvalds/linux/commit/b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4dPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/06/msg00011.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.htmlMailing List · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2020/06/msg00013.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200608-0001/Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4698Third Party Advisory
→
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.htmlMailing List · Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2020/05/08/2Mailing List · Third Party Advisory
→
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.5.4Release Notes · Vendor Advisory
→
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4dPatch · Vendor Advisory
→
https://github.com/torvalds/linux/commit/b70261a288ea4d2f4ac7cd04be08a9f0f2de4f4dPatch · Third Party Advisory

Quick Facts

CVE IDCVE-2020-12653
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-787
CISA KEVNo
Affected4 vendor(s)
PublishedMay 5, 2020

Related CVEs (CWE-787)

CVE-2018-10718
10.0
CVE-2002-2227
10.0
CVE-2015-0235
10.0
CVE-2004-1287
10.0
CVE-2026-42369
10.0
CVE-2004-0978
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-12653 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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