CVE-2020-28588
lowpriority · track · 22EPSS 0.011 · 66 %ileEURUUSEPSS · scored 2026-10-27
An information disclosure vulnerability exists in the /proc/pid/syscall functionality of Linux Kernel 5.1 Stable and 5.4.66. More specifically, this issue has been introduced in v5.1-rc4 (commit 631b7abacd02b88f4b0795c08b54ad4fc3e7c7c0) and is still present in v5.10-rc4, so it’s likely that all versions in between are affected. An attacker can read /proc/pid/syscall to trigger this vulnerability, which leads to the kernel leaking memory contents.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 2.1–5.5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (14)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
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references (7)
External citations — patches, advisories, analysis.
- https://git.kernel.org/linus/4f134b89a24b965991e7c345b9a4591821f7c2a6Patchcnnvd
- https://packetstormsecurity.com/files/161556/Ubuntu-Security-Notice-USN-4752-1.htmlcnnvd
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211cnnvd
- https://vigilance.fr/vulnerability/Linux-kernel-information-disclosure-via-collect-syscall-34090cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.0717cnnvd
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211enisa_euvd
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211ExploitTechnical DescriptionThird Party Advisorynvd
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