What’s Vulnerable › Vulnerabilities

CVE-2023-53044: dm stats: check for and propagate alloc_percpu failure

• 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: 2025-05-02 · updated 2026-06-17
• Weakness: CWE-476

Description

In the Linux kernel, the following vulnerability has been resolved: dm stats: check for and propagate alloc_percpu failure Check alloc_precpu()'s return value and return an error from dm_stats_init() if it fails. Update alloc_dev() to fail if dm_stats_init() does. Otherwise, a NULL pointer dereference will occur in dm_stats_cleanup() even if dm-stats isn't being actively used.

Affected products

• Linux kernel: from 3.12 before 4.14.312; from 4.15 before 4.19.280; from 4.20 before 5.4.240; from 5.5 before 5.10.177; from 5.11 before 5.15.105; from 5.16 before 6.1.22 — fixed in 4.14.312, 4.19.280, 5.10.177, 5.15.105, 5.4.240, 6.1.22

How to fix

Upgrade to a fixed version: Linux kernel 4.14.312, 4.19.280, 5.10.177, 5.15.105. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0d96bd507ed7e7d565b6d53ebd3874686f123b2e
• https://git.kernel.org/stable/c/2287d7b721471a3d58bcd829250336e3cdf1635e
• https://git.kernel.org/stable/c/443c9d522397511a4328dc2ec3c9c63c73049756
• https://git.kernel.org/stable/c/4a32a9a818a895671bd43e0c40351e60e4e9140b
• https://git.kernel.org/stable/c/5b66e36a3efd24041b7374432bfa4dec2ff01e95
• https://git.kernel.org/stable/c/a42180dd361584816bfe15c137b665699b994d90
• https://git.kernel.org/stable/c/c68f08cc745675a17894e1b4a5b5b9700ace6da4
• https://git.kernel.org/stable/c/d3aa3e060c4a80827eb801fc448debc9daa7c46b

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