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CVE-2022-50109: video: fbdev: amba-clcd: Fix refcount leak bugs

• 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: 2025-06-18 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: video: fbdev: amba-clcd: Fix refcount leak bugs In clcdfb_of_init_display(), we should call of_node_put() for the references returned by of_graph_get_next_endpoint() and of_graph_get_remote_port_parent() which have increased the refcount. Besides, we should call of_node_put() both in fail path or when the references are not used anymore.

Affected products

• Linux kernel: from 3.17 before 4.14.291; from 4.15 before 4.19.256; from 4.20 before 5.4.211; from 5.5 before 5.10.137; from 5.11 before 5.15.61; from 5.16 before 5.18.18 — fixed in 4.14.291, 4.19.256, 5.10.137, 5.15.61, 5.18.18, 5.19.2

How to fix

Upgrade to a fixed version: Linux kernel 4.14.291, 4.19.256, 5.10.137, 5.15.61. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/2688df86c02da6bdc9866b62d974e169a2678883
• https://git.kernel.org/stable/c/26c2b7d9fac42eb8317f3ceefa4c1a9a9170ca69
• https://git.kernel.org/stable/c/29f06f1905c312671a09ee85ca92ac04a1d9f305
• https://git.kernel.org/stable/c/49a4c1a87ef884e43cdda58b142a2a30f2f09efc
• https://git.kernel.org/stable/c/a51519ebd0fdad3546463018b8f6bc3b0f4d3032
• https://git.kernel.org/stable/c/a88ab277cca99aeb9a3b2b7db358f1a6dd528b0c
• https://git.kernel.org/stable/c/a97ff8a949dbf41be89f436b2b1a2b3d794493df
• https://git.kernel.org/stable/c/da276dc288bf838ea0fd778b5441ec0f601c69f7

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