CVE-2021-47571: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect()
First published: Fri May 24 2024(Updated: )
In the Linux kernel, the following vulnerability has been resolved: staging: rtl8192e: Fix use after free in _rtl92e_pci_disconnect() The free_rtllib() function frees the "dev" pointer so there is use after free on the next line. Re-arrange things to avoid that.
Credit: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux kernel | >=3.2<4.4.294 | |
| Linux kernel | >=4.5<4.9.292 | |
| Linux kernel | >=4.10<4.14.257 | |
| Linux kernel | >=4.15<4.19.219 | |
| Linux kernel | >=4.20<5.4.163 | |
| Linux kernel | >=5.5<5.10.83 | |
| Linux kernel | >=5.11<5.15.6 |
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Reference Links
- https://git.kernel.org/stable/c/d43aecb694b10db9a4228ce2d38b5ae8de374443
- https://git.kernel.org/stable/c/9186680382934b0e7529d3d70dcc0a21d087683b
- https://git.kernel.org/stable/c/c0ef0e75a858cbd8618b473f22fbca36106dcf82
- https://git.kernel.org/stable/c/bca19bb2dc2d89ce60c4a4a6e59609d4cf2e13ef
- https://git.kernel.org/stable/c/2e1ec01af2c7139c6a600bbfaea1a018b35094b6
- https://git.kernel.org/stable/c/8d0163cec7de995f9eb9c3128c83fb84f0cb1c64
- https://git.kernel.org/stable/c/e27ee2f607fe6a9b923ef1fc65461c0613c97594
- https://git.kernel.org/stable/c/b535917c51acc97fb0761b1edec85f1f3d02bda4
Frequently Asked Questions
What is the severity of CVE-2021-47571?
CVE-2021-47571 has been classified as a moderate severity vulnerability due to the potential for use-after-free conditions.
How do I fix CVE-2021-47571?
To fix CVE-2021-47571, update your Linux Kernel to a version later than 4.4.294, 4.9.292, 4.14.257, 4.19.219, 5.4.163, 5.10.83, or 5.15.6.
Which Linux Kernel versions are affected by CVE-2021-47571?
CVE-2021-47571 affects Linux Kernel versions from 3.2 to 4.4.294, 4.5 to 4.9.292, 4.10 to 4.14.257, 4.15 to 4.19.219, 4.20 to 5.4.163, 5.5 to 5.10.83, and 5.11 to 5.15.6.
What are the implications of CVE-2021-47571?
The implications of CVE-2021-47571 include potential crashes or arbitrary code execution due to a use-after-free vulnerability.
Was there a patch for CVE-2021-47571?
Yes, patches have been released that address CVE-2021-47571 in the affected versions of the Linux Kernel.
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