What’s Vulnerable › Vulnerabilities

CVE-2022-49384: md: fix double free of io_acct_set bioset

• 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: 2025-02-26 · updated 2026-06-17
• Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: md: fix double free of io_acct_set bioset Now io_acct_set is alloc and free in personality. Remove the codes that free io_acct_set in md_free and md_stop.

Affected products

• Linux kernel: from 5.15.17 before 5.15.46; from 5.16.3 before 5.17.14; from 5.18 before 5.18.3 — fixed in 5.15.46, 5.17.14, 5.18.3

How to fix

Upgrade to a fixed version: Linux kernel 5.15.46, 5.17.14, 5.18.3. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/36a2fc44c574a59ee3b5e2cb327182f227b2b07e
• https://git.kernel.org/stable/c/42b805af102471f53e3c7867b8c2b502ea4eef7e
• https://git.kernel.org/stable/c/ea7d7bd90079d96f9c86bdaf0b106e0cd2a70661
• https://git.kernel.org/stable/c/f99d5b5dc8a42c807b5f1176b925aa45d61962ab

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