What’s Vulnerable › Vulnerabilities

CVE-2022-1786

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-06-02 · updated 2026-06-17
• Weakness: CWE-843

Description

A use-after-free flaw was found in the Linux kernel’s io_uring subsystem in the way a user sets up a ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a local user to crash or escalate their privileges on the system.

Affected products

• Linux kernel: from 5.10 before 5.12 — fixed in 5.12
• NetApp H300S Firmware: all versions
• NetApp H410C Firmware: all versions
• NetApp H410S Firmware: all versions
• NetApp H500S Firmware: all versions
• NetApp H700S Firmware: all versions

How to fix

Upgrade to a fixed version: Linux kernel 5.12. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=2087760
• https://security.netapp.com/advisory/ntap-20220722-0001/
• https://www.debian.org/security/2022/dsa-5161
• https://bugzilla.redhat.com/show_bug.cgi?id=2087760
• https://security.netapp.com/advisory/ntap-20220722-0001/
• https://www.debian.org/security/2022/dsa-5161

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