Vulnerability Monitor

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CVE-2020-29374

An issue was discovered in the Linux kernel before 5.7.3, related to mm/gup.c and mm/huge_memory.c. The get_user_pages (aka gup) implementation, when used for a copy-on-write page, does not properly consider the semantics of read operations and therefore can grant unintended write access, aka CID-17839856fd58.

Security Impact Summary

This vulnerability carries a LOW severity rating with a CVSS v3.1 score of 3.6, requiring local system access to exploit but requires specific conditions to be met without requiring user interaction requiring only low-level privileges . The vulnerability impacts limited data confidentiality, limited integrity, for affected systems. Impacting 11 products from linux, from debian, from netapp and 8 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-11-28T07:15:11.960

Last Modified

2024-11-21T05:23:56.503

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 3.6 (LOW)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:P/I:P/A:N

Access Vector: LOCAL
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

3.4

Impact Score

4.9

Weaknesses

Type: Primary
CWE-362
CWE-863

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 5.7.3	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Operating System	netapp	500f_firmware	-	Yes
Hardware	netapp	500f	-	No
Operating System	netapp	a250_firmware	-	Yes
Hardware	netapp	a250	-	No
Operating System	netapp	h410c_firmware	-	Yes
Hardware	netapp	h410c	-	No
Application	netapp	solidfire_\&_hci_management_node	-	Yes
Application	netapp	solidfire_\&_hci_storage_node	-	Yes
Operating System	netapp	hci_compute_node_bios	-	Yes

References

http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html Exploit, Third Party Advisory, VDB Entry ([email protected])
https://bugs.chromium.org/p/project-zero/issues/detail?id=2045 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3 Release Notes, Third Party Advisory, Vendor Advisory ([email protected])
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17839856fd588f4ab6b789f482ed3ffd7c403e1f Patch, Vendor Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List, Third Party Advisory ([email protected])
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html Mailing List, Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210115-0002/ Third Party Advisory ([email protected])
https://www.debian.org/security/2022/dsa-5096 Third Party Advisory ([email protected])
http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://bugs.chromium.org/p/project-zero/issues/detail?id=2045 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3 Release Notes, Third Party Advisory, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17839856fd588f4ab6b789f482ed3ffd7c403e1f Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210115-0002/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2022/dsa-5096 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For linux's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.