Vulnerability in Linux Kernel
CVE-2020-29534
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (37.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Linux Kernel — versions 5.10
References
- bugs.chromium.org/p/project-zero/issues/detail (Exploit, Patch, Third Party Advisory, Issue Tracking)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9.3 (Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-29534?
- CVE-2020-29534 is a high-severity vulnerability in Linux Kernel. CVSS score: 7.8/10. Published 2020-12-03.
- How severe is CVE-2020-29534?
- High severity. CVSS v3 base score is 7.8 out of 10.