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.

CVSS 3.1

3.6CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-25)

CWEs

CWE-362, CWE-863

Published

2020-11-28

Modified

2026-10-08

Record from

the NVD, synced 2026-10-19

Affected

• debian:debian_linux
• linux:linux_kernel
• netapp:500f_firmware
• netapp:a250_firmware
• netapp:h410c_firmware
• netapp:hci_compute_node_bios
• netapp:solidfire_\&_hci_management_node
• netapp:solidfire_\&_hci_storage_node

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

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