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high7.8

CVE-2023-52510

In the Linux kernel, the following vulnerability has been resolved: ieee802154: ca8210: Fix a potential UAF in ca8210_probe If of_clk_add_provider() fails in c…

Impact

In the Linux kernel, the following vulnerability has been resolved: ieee802154: ca8210: Fix a potential UAF in ca8210_probe If of_clk_add_provider() fails in ca8210_register_ext_clock(), it calls clk_unregister() to release priv->clk and returns an error. However, the caller ca8210_probe() then calls ca8210_remove(), where priv->clk is freed again in ca8210_unregister_ext_clock(). In this case, a use-after-free may happen in the second time we call clk_unregister(). Fix this by removing the first clk_unregister(). Also, priv->clk could be an error code on failure of clk_register_fixed_rate(). Use IS_ERR_OR_NULL to catch this case in ca8210_unregister_ext_clock().

Affected products

VendorProductAffected versions
LinuxLinux Kernel
from 4.12 before 4.14.328
from 4.15 before 4.19.297
from 4.20 before 5.4.259
from 5.5 before 5.10.199
from 5.11 before 5.15.136
from 5.16 before 6.1.59

Weakness classification

CWE-416

References