What’s Vulnerable › Vulnerabilities

CVE-2022-48768: tracing/histogram: Fix a potential memory leak for kstrdup()

• 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: 2024-06-20 · updated 2026-06-17
• Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: tracing/histogram: Fix a potential memory leak for kstrdup() kfree() is missing on an error path to free the memory allocated by kstrdup(): p = param = kstrdup(data->params[i], GFP_KERNEL); So it is better to free it via kfree(p).

Affected products

• Linux kernel: from 5.4.19 before 5.4.176; from 5.6 before 5.10.96; from 5.11 before 5.15.19; from 5.16 before 5.16.5; 5.17-rc1 — fixed in 5.10.96, 5.15.19, 5.16.5, 5.4.176

How to fix

Upgrade to a fixed version: Linux kernel 5.10.96, 5.15.19, 5.16.5, 5.4.176. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/8a8878ebb596281f50fc0b9a6e1f23f0d7f154e8
• https://git.kernel.org/stable/c/d71b06aa995007eafd247626d0669b9364c42ad7
• https://git.kernel.org/stable/c/df86e2fe808c3536a9dba353cc2bebdfea00d0cf
• https://git.kernel.org/stable/c/e33fa4a46ee22de88a700e2e3d033da8214a5175
• https://git.kernel.org/stable/c/e629e7b525a179e29d53463d992bdee759c950fb
• https://git.kernel.org/stable/c/8a8878ebb596281f50fc0b9a6e1f23f0d7f154e8
• https://git.kernel.org/stable/c/d71b06aa995007eafd247626d0669b9364c42ad7
• https://git.kernel.org/stable/c/df86e2fe808c3536a9dba353cc2bebdfea00d0cf
• https://git.kernel.org/stable/c/e33fa4a46ee22de88a700e2e3d033da8214a5175
• https://git.kernel.org/stable/c/e629e7b525a179e29d53463d992bdee759c950fb

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