What’s Vulnerable › Vulnerabilities

CVE-2023-53568: s390/zcrypt: don't leak memory if dev_set_name() fails

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-04 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: s390/zcrypt: don't leak memory if dev_set_name() fails When dev_set_name() fails, zcdn_create() doesn't free the newly allocated resources. Do it.

Affected products

• Linux kernel: from 4.20 before 5.4.257; from 5.5 before 5.10.195; from 5.11 before 5.15.132; from 5.16 before 6.1.54; from 6.2 before 6.5.4 — fixed in 5.10.195, 5.15.132, 5.4.257, 6.1.54, 6.5.4

How to fix

Upgrade to a fixed version: Linux kernel 5.10.195, 5.15.132, 5.4.257, 6.1.54. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0878052579cb2773caee64812a811edcab6b5a55
• https://git.kernel.org/stable/c/131cd74a8e38d75239f2c81dfee53d6554eb8bf8
• https://git.kernel.org/stable/c/147d8da33a2c2195ec63acd56cd7d80a3458c253
• https://git.kernel.org/stable/c/174f11ef1615ec3ab1e2189685864433c0d855a2
• https://git.kernel.org/stable/c/6252f47b78031979ad919f971dc8468b893488bd
• https://git.kernel.org/stable/c/6b0cb9c055843777b374309503d89eabeb769355

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