CVE-2026-72140: i2c: mlxbf: Fix use-after-free in mlxbf_i2c_init_resource()

Severity: unknown
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-15 · updated 2026-08-17

Description

In the Linux kernel, the following vulnerability has been resolved: i2c: mlxbf: Fix use-after-free in mlxbf_i2c_init_resource() If devm_platform_get_and_ioremap_resource() returns an error, mlxbf_i2c_init_resource() frees tmp_res before reading tmp_res->io to get the error code. This results in a use-after-free. Save the error code before freeing tmp_res.

Affected products

Linux kernel: 5.10 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/5290a52533e09c38374963f4bb0b35121fe555c7
https://git.kernel.org/stable/c/6a108c9f5a81bb7b29dbb1398be0089655b6bfd2
https://git.kernel.org/stable/c/71356737a7a55c76fee847563e3d33f8e6dc6b6d
https://git.kernel.org/stable/c/b398cbbbb9dd76210682a8c9aabd34c5168800b9
https://git.kernel.org/stable/c/c4d9b6a0c9645366d9e4af8a6ac8347bd4c841aa
https://git.kernel.org/stable/c/ce960a1b2caa4ad08291f28d8bcf17ad5a864e54
https://git.kernel.org/stable/c/e6a395a71f4652261d09b572a03c96052662a056
https://git.kernel.org/stable/c/fb267770bf822064f510c9b46743f533d8fa8a5f

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