High severity7.8NVD Advisory· Published Dec 3, 2020· Updated Jun 17, 2026

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Linux/Kernel3 versions
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*range: >=5.1,<5.8.18
- cpe:2.3:o:linux:linux_kernel:5.10:rc1:*:*:*:*:*:*
- (no CPE)range: <5.9.3
Linux/Linux kerneldescription

Patches

Vulnerability mechanics

References

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

News mentions

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