What’s Vulnerable › Vulnerabilities

CVE-2022-3977

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-01-12 · updated 2026-06-17
• Weakness: CWE-416

Description

A use-after-free flaw was found in the Linux kernel MCTP (Management Component Transport Protocol) functionality. This issue occurs when a user simultaneously calls DROPTAG ioctl and socket close happens, which could allow a local user to crash the system or potentially escalate their privileges on the system.

Affected products

• Linux kernel: from 5.18 before 5.19.16; from 6.0 before 6.0.2 — fixed in 5.19.16, 6.0.2

How to fix

Upgrade to a fixed version: Linux kernel 5.19.16, 6.0.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a732b46736cd8a29092e4b0b1a9ba83e672bf89
• https://security.netapp.com/advisory/ntap-20230223-0005/
• https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3a732b46736cd8a29092e4b0b1a9ba83e672bf89
• https://security.netapp.com/advisory/ntap-20230223-0005/

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