What’s Vulnerable › Vulnerabilities

CVE-2022-49438: Input: sparcspkr - fix refcount leak in bbc_beep_probe

• 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: Input: sparcspkr - fix refcount leak in bbc_beep_probe of_find_node_by_path() calls of_find_node_opts_by_path(), which returns a node pointer with refcount incremented, we should use of_node_put() on it when done. Add missing of_node_put() to avoid refcount leak.

Affected products

• Linux kernel: from 2.6.26 before 4.9.318; from 4.10 before 4.14.283; from 4.15 before 4.19.247; from 4.20 before 5.4.198; from 5.5 before 5.10.121; from 5.11 before 5.15.46 — fixed in 4.14.283, 4.19.247, 4.9.318, 5.10.121, 5.15.46, 5.17.14

How to fix

Upgrade to a fixed version: Linux kernel 4.14.283, 4.19.247, 4.9.318, 5.10.121. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/1124e39fea0e2fdb4202f95b716cb97cc7de7cc7
• https://git.kernel.org/stable/c/2f51db16cb740ff90086189a1ef2581eab665591
• https://git.kernel.org/stable/c/353bc58ac6c782d4dcde9136a91d1f90867938fe
• https://git.kernel.org/stable/c/418b6a3e12f75638abc5673eb76cb32127d0ab13
• https://git.kernel.org/stable/c/6e07ccc7d56130f760d23f67a70c45366c07debc
• https://git.kernel.org/stable/c/73d6f42d8d86648bec2e73d34fe1648cb6d23e08
• https://git.kernel.org/stable/c/bbc2b0ce6042dd3117827f10ea8cb67e0ab786da
• https://git.kernel.org/stable/c/c8994b30d71d64d5dcc9bc0edbfdf367171aa96f
• https://git.kernel.org/stable/c/f13064b0f2c651a3fbb0749932795c6fd21556a8

Get alerted when CVE-2022-49438 or the next vulnerability affects your stack