What’s Vulnerable › Vulnerabilities

CVE-2020-26088

• Severity: medium (CVSS 5.5 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: none known
• Published: 2020-09-24 · updated 2026-06-17
• Weakness: CWE-276

Description

A missing CAP_NET_RAW check in NFC socket creation in net/nfc/rawsock.c in the Linux kernel before 5.8.2 could be used by local attackers to create raw sockets, bypassing security mechanisms, aka CID-26896f01467a.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04
• Debian Linux: 9.0
• Linux kernel: before 5.8.2 — fixed in 5.8.2
• openSUSE Leap: 15.1, 15.2

How to fix

Upgrade to a fixed version: Linux kernel 5.8.2. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2
• https://github.com/torvalds/linux/commit/26896f01467a28651f7a536143fe5ac8449d4041
• https://lists.debian.org/debian-lts-announce/2020/09/msg00025.html
• https://lists.debian.org/debian-lts-announce/2020/10/msg00032.html
• https://lists.debian.org/debian-lts-announce/2020/10/msg00034.html
• https://usn.ubuntu.com/4578-1/
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00001.html
• http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00021.html
• https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8.2
• https://github.com/torvalds/linux/commit/26896f01467a28651f7a536143fe5ac8449d4041

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