What’s Vulnerable › Vulnerabilities

CVE-2021-47074: nvme-loop: fix memory leak in nvme_loop_create_ctrl()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-01 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: nvme-loop: fix memory leak in nvme_loop_create_ctrl() When creating loop ctrl in nvme_loop_create_ctrl(), if nvme_init_ctrl() fails, the loop ctrl should be freed before jumping to the "out" label.

Affected products

• Linux kernel: from 4.8 before 5.10.40; from 5.11 before 5.12.7; 5.13-rc1, 5.13-rc2 — fixed in 5.10.40, 5.12.7

How to fix

Upgrade to a fixed version: Linux kernel 5.10.40, 5.12.7. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/03504e3b54cc8118cc26c064e60a0b00c2308708
• https://git.kernel.org/stable/c/551ba08d4b7eb26f75758cdb9f15105b276517ad
• https://git.kernel.org/stable/c/9c980795ccd77e8abec33dd6fe28dfe1c4083e65
• https://git.kernel.org/stable/c/03504e3b54cc8118cc26c064e60a0b00c2308708
• https://git.kernel.org/stable/c/551ba08d4b7eb26f75758cdb9f15105b276517ad
• https://git.kernel.org/stable/c/9c980795ccd77e8abec33dd6fe28dfe1c4083e65

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