What’s Vulnerable › Vulnerabilities

CVE-2020-28097

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-06-24 · updated 2026-10-08
• Weakness: CWE-125

Description

The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85.

Affected products

• Linux kernel: before 5.8.10 — fixed in 5.8.10
• NetApp Cloud Backup: all versions
• NetApp H300E Firmware: all versions
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500E Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H700E Firmware: all versions
• NetApp H700S Firmware: all versions

How to fix

Upgrade to a fixed version: Linux kernel 5.8.10. Check the vendor advisory for mitigations.

References

• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.10
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=973c096f6a85e5b5f2a295126ba6928d9a6afd45
• https://github.com/torvalds/linux/commit/973c096f6a85e5b5f2a295126ba6928d9a6afd45
• https://seclists.org/oss-sec/2020/q3/176
• https://security.netapp.com/advisory/ntap-20210805-0001/
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.10
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=973c096f6a85e5b5f2a295126ba6928d9a6afd45
• https://github.com/torvalds/linux/commit/973c096f6a85e5b5f2a295126ba6928d9a6afd45
• https://seclists.org/oss-sec/2020/q3/176
• https://security.netapp.com/advisory/ntap-20210805-0001/

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