What’s Vulnerable › Vulnerabilities

CVE-2022-48753: block: fix memory leak in disk_register_independent_access_ranges

• 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: block: fix memory leak in disk_register_independent_access_ranges kobject_init_and_add() takes reference even when it fails. According to the doc of kobject_init_and_add() If this function returns an error, kobject_put() must be called to properly clean up the memory associated with the object. Fix this issue by adding kobject_put(). Callback function blk_ia_ranges_sysfs_release() in kobject_put() can handle the pointer "iars" properly.

Affected products

• Linux kernel: from 5.16 before 5.16.5; 5.17-rc1 — fixed in 5.16.5

How to fix

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

References

• https://git.kernel.org/stable/c/83114df32ae779df57e0af99a8ba6c3968b2ba3d
• https://git.kernel.org/stable/c/fe4214a07e0b53d2af711f57519e33739c5df23f
• https://git.kernel.org/stable/c/83114df32ae779df57e0af99a8ba6c3968b2ba3d
• https://git.kernel.org/stable/c/fe4214a07e0b53d2af711f57519e33739c5df23f

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