Vulnerabilities > CVE-2021-47372 - Use After Free vulnerability in Linux Kernel
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
In the Linux kernel, the following vulnerability has been resolved: net: macb: fix use after free on rmmod plat_dev->dev->platform_data is released by platform_device_unregister(), use of pclk and hclk is a use-after-free. Since device unregister won't need a clk device we adjust the function call sequence to fix this issue. [ 31.261225] BUG: KASAN: use-after-free in macb_remove+0x77/0xc6 [macb_pci] [ 31.275563] Freed by task 306: [ 30.276782] platform_device_release+0x25/0x80
Vulnerable Configurations
Common Weakness Enumeration (CWE)
References
- https://git.kernel.org/stable/c/1da750d1e2140ef43d64d17f301ff6f41b45541e
- https://git.kernel.org/stable/c/1da750d1e2140ef43d64d17f301ff6f41b45541e
- https://git.kernel.org/stable/c/46670fb832ee80943715df618632ca13c2e96f2b
- https://git.kernel.org/stable/c/46670fb832ee80943715df618632ca13c2e96f2b
- https://git.kernel.org/stable/c/4ad6f2d23b0f6ac0d3e5f3102a4256d1c86c90f5
- https://git.kernel.org/stable/c/4ad6f2d23b0f6ac0d3e5f3102a4256d1c86c90f5
- https://git.kernel.org/stable/c/7721221e87d25c9840d9ca6b986dbdc410d5ce2b
- https://git.kernel.org/stable/c/7721221e87d25c9840d9ca6b986dbdc410d5ce2b
- https://git.kernel.org/stable/c/a7d521cc726f30b8e679a6f36d04b18a8ab3c536
- https://git.kernel.org/stable/c/a7d521cc726f30b8e679a6f36d04b18a8ab3c536
- https://git.kernel.org/stable/c/d82d5303c4c539db86588ffb5dc5b26c3f1513e8
- https://git.kernel.org/stable/c/d82d5303c4c539db86588ffb5dc5b26c3f1513e8