Description

In the Linux kernel, the following vulnerability has been resolved: crypto: atmel-sha204a - Fix potential UAF and memory leak in remove path Unregister the hwrng to prevent new ->read() calls and flush the Atmel I2C workqueue before teardown to prevent a potential UAF if a queued callback runs while the device is being removed. Drop the early return to ensure sysfs entries are removed and ->hwrng.priv is freed, preventing a memory leak.

References 6

• git.kernel.org https://git.kernel.org/stable/c/1193c12126d39bf986a5a9214827b73707b193ab
• git.kernel.org https://git.kernel.org/stable/c/31901371ccd16b42d2f167b1018ba9ae8bd5a6c7
• git.kernel.org https://git.kernel.org/stable/c/6dbeb0f788582e1ab5dfc3f41994eac0ec88c2b5
• git.kernel.org https://git.kernel.org/stable/c/775c00d87c385b758da9504cf053acea00e2ed40
• git.kernel.org https://git.kernel.org/stable/c/bab1adf3b87e4bfac92c4f5963c63db434d561c1
• git.kernel.org https://git.kernel.org/stable/c/c5a45d14234bf26e28a89e3a5dcc08336595cf11

Remediation