High severity7.8NVD Advisory· Published Dec 3, 2020· Updated Jun 17, 2026
CVE-2020-29534
CVE-2020-29534
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.
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Affected products
2- Linux/Linux kerneldescription
Patches
Vulnerability mechanics
References
3- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3nvdPatchVendor Advisory
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/nvdPatchVendor Advisory
- bugs.chromium.org/p/project-zero/issues/detailnvdExploitIssue TrackingPatchThird Party Advisory
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