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CVE-2022-49682: xtensa: Fix refcount leak bug in time.c

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-26 · updated 2026-06-17

Description

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.

Affected products

• Linux kernel: before 4.9.321; from 4.10 before 4.14.286; from 4.15 before 4.19.250; from 4.20 before 5.4.202; from 5.5 before 5.10.127; from 5.11 before 5.15.51 — fixed in 4.14.286, 4.19.250, 4.9.321, 5.10.127, 5.15.51, 5.18.8

How to fix

Upgrade to a fixed version: Linux kernel 4.14.286, 4.19.250, 4.9.321, 5.10.127. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0dcc1dd8a5dd9240639f1051dfaa2dffc9fbbde5
• https://git.kernel.org/stable/c/0e403a383c14b63c86bd9df085b7e573e9caee64
• https://git.kernel.org/stable/c/3e5eb904d9ba657308fc75a5de434b0e58dcb8d7
• https://git.kernel.org/stable/c/7de4502af68f4f3932f450157f5483eb7b33cb74
• https://git.kernel.org/stable/c/a0117dc956429f2ede17b323046e1968d1849150
• https://git.kernel.org/stable/c/af0ff2da01521144bc11194f4c26485d7c9cee73
• https://git.kernel.org/stable/c/e5234a9d64a976abd134a14710dcd5188158a7c5
• https://git.kernel.org/stable/c/f1eaf4ba5372ad111f687a80c67e270708e14c23

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