high7.8
CVE-2020-29534
An issue was discovered in the Linux kernel before 5.9.3.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linux | Linux Kernel | from 5.1 before 5.8.18 from 5.9.0 before 5.9.3 Version 5.10 |
References
- NVD record
- CVE.org record
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2089
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f2122045b946241a9e549c2a76cea54fa58a7ff
- https://bugs.chromium.org/p/project-zero/issues/detail?id=2089
- https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0f2122045b946241a9e549c2a76cea54fa58a7ff