Linux Kernel up to 5.18.7 time.c calibrate_ccount reference count

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.18.7 and classified as critical. The impacted element is the function calibrate_ccount of the file time.c. The manipulation leads to reference count. This vulnerability is listed as CVE-2022-49682. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.18.7 and classified as critical. This issue affects the function calibrate_ccount of the file time.c. The manipulation with an unknown input leads to a reference count vulnerability. Using CWE to declare the problem leads to CWE-911. The product uses a reference count to manage a resource, but it does not update or incorrectly updates the reference count. Impacted is availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: xtensa: Fix refcount leak bug in time.c In calibrate_ccount(), of_find_compatible_node() will return a node pointer with refcount incremented. We should use of_node_put() when it is not used anymore.

The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2022-49682 since 02/26/2025. Technical details are known, but no exploit is available.

Upgrading to version 4.9.321, 4.14.286, 4.19.250, 5.4.202, 5.10.127, 5.15.51 or 5.18.8 eliminates this vulnerability. Applying the patch 3e5eb904d9ba657308fc75a5de434b0e58dcb8d7/7de4502af68f4f3932f450157f5483eb7b33cb74/f1eaf4ba5372ad111f687a80c67e270708e14c23/e5234a9d64a976abd134a14710dcd5188158a7c5/af0ff2da01521144bc11194f4c26485d7c9cee73/0dcc1dd8a5dd9240639f1051dfaa2dffc9fbbde5/0e403a383c14b63c86bd9df085b7e573e9caee64/a0117dc956429f2ede17b323046e1968d1849150 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.

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Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.9.320
• 4.14.285
• 4.19.249
• 5.4.201
• 5.10.126
• 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
• 5.18.0
• 5.18.1
• 5.18.2
• 5.18.3
• 5.18.4
• 5.18.5
• 5.18.6
• 5.18.7

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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