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CVE-2022-49652: dmaengine: ti: Fix refcount leak in ti_dra7_xbar_route_allocate

• 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: dmaengine: ti: Fix refcount leak in ti_dra7_xbar_route_allocate of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not needed anymore. Add missing of_node_put() in to fix this.

Affected products

• Linux kernel: from 4.5 before 4.9.323; from 4.10 before 4.14.288; from 4.15 before 4.19.252; from 4.20 before 5.4.205; from 5.5 before 5.10.130; from 5.11 before 5.15.54 — fixed in 4.14.288, 4.19.252, 4.9.323, 5.10.130, 5.15.54, 5.18.11

How to fix

Upgrade to a fixed version: Linux kernel 4.14.288, 4.19.252, 4.9.323, 5.10.130. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/37147e22cd8dfc0412495cb361708836157a4486
• https://git.kernel.org/stable/c/3bd66010398871807c1cebacee07d60ded1b1402
• https://git.kernel.org/stable/c/452b9dfd7aca96befce22634fadb111737f22bbe
• https://git.kernel.org/stable/c/61b4ef19c346dc21ab1d4f39f5c412e3037b2bdc
• https://git.kernel.org/stable/c/b31ab132561c7f1b6459039152b8d09e44eb3565
• https://git.kernel.org/stable/c/b5a817f8d62e9e13280928f3756e54854ae4962e
• https://git.kernel.org/stable/c/c132fe78ad7b4ce8b5d49a501a15c29d08eeb23a
• https://git.kernel.org/stable/c/cb9813d7eae917acd34436160a278b8b5d48ca53

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