What’s Vulnerable › Vulnerabilities
CVE-2020-29374
- Severity: low (CVSS 3.6 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2020-11-28 · updated 2026-10-08
- Weakness: CWE-362
Description
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.
Affected products
- Debian Linux: 9.0, 10.0
- Linux kernel: before 5.7.3 — fixed in 5.7.3
- NetApp 500F Firmware: all versions
- NetApp A250 Firmware: all versions
- NetApp H410C Firmware: all versions
- NetApp Hci Compute Node Bios: all versions
- NetApp Solidfire & Hci Management Node: all versions
- NetApp Solidfire & Hci Storage Node: all versions
How to fix
Upgrade to a fixed version: Linux kernel 5.7.3. Check the vendor advisory for mitigations.
References
- http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
- 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://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
- https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://security.netapp.com/advisory/ntap-20210115-0002/
- https://www.debian.org/security/2022/dsa-5096
- http://packetstormsecurity.com/files/162117/Kernel-Live-Patch-Security-Notice-LSN-0075-1.html
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2045
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.7.3
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