---
cve: "CVE-2020-29374"
severity: "LOW"
cvss: 3.1
epss: "41%"
vendor: "n/a"
kev: false
exploited: false
published: "2020-11-28 07:15:11"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T22:32:30+02:00"
---

# CVE-2020-29374

> 3.1 LOW · 🧪 PoC

## Beschreibung

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.

## Referenzen

- <https://bugs.chromium.org/p/project-zero/issues/detail?id=2045>
- <https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3>
- <https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=17839856fd588f4ab6b789f482ed3ffd7c403e1f>
- <https://security.netapp.com/advisory/ntap-20210115-0002/>
- <http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html>
- <https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html>
- <https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html>
- <https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html>
- <https://www.debian.org/security/2022/dsa-5096>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-29374) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_