MEDIUM
CVE-2020-12770
NVD-CWE-noinfoPublished: May 9, 2020· Updated: Jun 17, 2026
6.7
CVSS v3.1
Official Description
An issue was discovered in the Linux kernel through 5.6.11. sg_write lacks an sg_remove_request call in a certain failure case, aka CID-83c6f2390040.
Technical Analysis
CVE-2020-12770 requires local access, meaning attackers must already have a foothold on the target system.
Exploitation requires high 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 6.7.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
Linux1 product(s)
linux kernel
netapp32 product(s)
active iq unified managercloud backupelement softwarehci management nodesolidfiresteelstore cloud integrated storagebootstrap oshci compute nodea700s firmwarea700sh300s firmwareh300s+20
Source: NVD CPE · 44 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
ADVISORYhttps://usn.ubuntu.com/4411-1/
ADVISORYhttps://usn.ubuntu.com/4412-1/
ADVISORYhttps://usn.ubuntu.com/4413-1/
ADVISORYhttps://usn.ubuntu.com/4414-1/
ADVISORYhttps://usn.ubuntu.com/4419-1/
ADVISORYhttps://usn.ubuntu.com/4411-1/
ADVISORYhttps://usn.ubuntu.com/4412-1/
ADVISORYhttps://usn.ubuntu.com/4413-1/
ADVISORYhttps://usn.ubuntu.com/4414-1/
ADVISORYhttps://usn.ubuntu.com/4419-1/
All References (32)
→
→
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://lkml.org/lkml/2020/4/13/870Mailing List · Patch · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200608-0001/Third Party Advisory
→
https://usn.ubuntu.com/4411-1/Third Party Advisory
→
https://usn.ubuntu.com/4412-1/Third Party Advisory
→
https://usn.ubuntu.com/4413-1/Third Party Advisory
→
https://usn.ubuntu.com/4414-1/Third Party Advisory
→
https://usn.ubuntu.com/4419-1/Third Party Advisory
→
https://www.debian.org/security/2020/dsa-4698Third Party Advisory
Quick Facts
CVE IDCVE-2020-12770
CVSS Score6.7 / 10
SeverityMEDIUM
WeaknessNVD-CWE-noinfo
CISA KEVNo
Affected5 vendor(s)
PublishedMay 9, 2020
Related CVEs (NVD-CWE-noinfo)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2020-12770 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.