Linux Kernel up to 5.10.131/5.15.55/5.18.12 ima_init_crypto memory leak

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel up to 5.10.131/5.15.55/5.18.12. This vulnerability affects the function ima_init_crypto. Executing a manipulation can lead to memory leak. This vulnerability is handled as CVE-2022-49627. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.10.131/5.15.55/5.18.12 and classified as critical. This vulnerability affects the function ima_init_crypto. The manipulation with an unknown input leads to a memory leak vulnerability. The CWE definition for the vulnerability is CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. As an impact it is known to affect availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: ima: Fix potential memory leak in ima_init_crypto() On failure to allocate the SHA1 tfm, IMA fails to initialize and exits without freeing the ima_algo_array. Add the missing kfree() for ima_algo_array to avoid the potential memory leak.

The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2022-49627 since 02/26/2025. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 234895 (CentOS 9 : kernel-5.14.0-580.el9), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.10.132, 5.15.56 or 5.18.13 eliminates this vulnerability. Applying the patch c1d9702ceb4a091da6bee380627596d1fba09274/601ae26aa2802a4c10c94d7388a99eabdbefab2b/830de9667b3ada0a75a3f098dfc7159709fe397b/067d2521874135267e681c19d42761c601d503d6 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (234895). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 5.10.131
• 5.15.0
• 5.15.1
• 5.15.2
• 5.15.3
• 5.15.4
• 5.15.5
• 5.15.6
• 5.15.7
• 5.15.8
• 5.15.9
• 5.15.10
• 5.15.11
• 5.15.12
• 5.15.13
• 5.15.14
• 5.15.15
• 5.15.16
• 5.15.17
• 5.15.18
• 5.15.19
• 5.15.20
• 5.15.21
• 5.15.22
• 5.15.23
• 5.15.24
• 5.15.25
• 5.15.26
• 5.15.27
• 5.15.28
• 5.15.29
• 5.15.30
• 5.15.31
• 5.15.32
• 5.15.33
• 5.15.34
• 5.15.35
• 5.15.36
• 5.15.37
• 5.15.38
• 5.15.39
• 5.15.40
• 5.15.41
• 5.15.42
• 5.15.43
• 5.15.44
• 5.15.45
• 5.15.46
• 5.15.47
• 5.15.48
• 5.15.49
• 5.15.50
• 5.15.51
• 5.15.52
• 5.15.53
• 5.15.54
• 5.15.55
• 5.18.0
• 5.18.1
• 5.18.2
• 5.18.3
• 5.18.4
• 5.18.5
• 5.18.6
• 5.18.7
• 5.18.8
• 5.18.9
• 5.18.10
• 5.18.11
• 5.18.12

License

• open-source

Website

• Vendor: https://www.kernel.org/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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