CVE-2020-29534
High
Description
An issue was discovered in the Linux kernel before 5.9.3. io_uring takes a non-refcounted reference to the files_struct of the process that submitted a request, causing execve() to incorrectly optimize unshare_fd(), aka CID-0f2122045b94.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux Kernel
PublishedDec 3, 2020
First seenDec 3, 2020
How to fix
Update
- linux linux_kernel5.8.18, 5.9.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.1 ≤ v < 5.8.18, 5.9.0 ≤ v < 5.9.3, 5.10 | 5.8.18, 5.9.3 |
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