What’s Vulnerable › Vulnerabilities

CVE-2024-27392: nvme: host: fix double-free of struct nvme_id_ns in ns_update_nuse()

• 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: 2024-05-01 · updated 2026-08-04
• Weakness: CWE-415

Description

In the Linux kernel, the following vulnerability has been resolved: nvme: host: fix double-free of struct nvme_id_ns in ns_update_nuse() When nvme_identify_ns() fails, it frees the pointer to the struct nvme_id_ns before it returns. However, ns_update_nuse() calls kfree() for the pointer even when nvme_identify_ns() fails. This results in KASAN double-free, which was observed with blktests nvme/045 with proposed patches [1] on the kernel v6.8-rc7. Fix the double-free by skipping kfree() when nvme_identify_ns() fails.

Affected products

• Linux kernel: from 6.8 before 6.8.2 — fixed in 6.8.2

How to fix

Upgrade to a fixed version: Linux kernel 6.8.2. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/534f9dc7fe495b3f9cc84363898ac50c5a25fccb
• https://git.kernel.org/stable/c/8d0d2447394b13fb22a069f0330f9c49b7fff9d3
• https://git.kernel.org/stable/c/534f9dc7fe495b3f9cc84363898ac50c5a25fccb
• https://git.kernel.org/stable/c/8d0d2447394b13fb22a069f0330f9c49b7fff9d3

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