What’s Vulnerable › Vulnerabilities

CVE-2020-12659

• Severity: medium (CVSS 6.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2020-05-05 · updated 2026-06-17
• Weakness: CWE-787

Description

An issue was discovered in the Linux kernel before 5.6.7. xdp_umem_reg in net/xdp/xdp_umem.c has an out-of-bounds write (by a user with the CAP_NET_ADMIN capability) because of a lack of headroom validation.

Affected products

• Linux kernel: from 4.18 before 4.19.118; from 4.20 before 5.4.35; from 5.5 before 5.6.7 — fixed in 4.19.118, 5.4.35, 5.6.7
• Active IQ Unified Manager for VMware vSphere, Linux, and Microsoft Windows: all versions
• NetApp Aff Baseboard Management Controller: a700s
• NetApp Cloud Backup: all versions
• NetApp Hci Baseboard Management Controller: h300s, h410c, h410s, h500s, h610c, h610s (+2)
• NetApp Solidfire & Hci Management Node: all versions
• NetApp Solidfire Baseboard Management Controller: all versions
• NetApp Steelstore Cloud Integrated Storage: all versions

How to fix

Upgrade to a fixed version: Linux kernel 4.19.118, 5.4.35, 5.6.7. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
• https://bugzilla.kernel.org/show_bug.cgi?id=207225
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.7
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=99e3a236dd43d06c65af0a2ef9cb44306aef6e02
• https://github.com/torvalds/linux/commit/99e3a236dd43d06c65af0a2ef9cb44306aef6e02
• https://security.netapp.com/advisory/ntap-20200608-0001/
• https://usn.ubuntu.com/4387-1/
• https://usn.ubuntu.com/4388-1/
• https://usn.ubuntu.com/4389-1/
• http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00022.html
• https://bugzilla.kernel.org/show_bug.cgi?id=207225
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.7

Get alerted when CVE-2020-12659 or the next vulnerability affects your stack