CVE-2020-28588
First published: Mon May 10 2021(Updated: )
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.
Credit: talos-cna@cisco.com talos-cna@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Linux Linux kernel | =5.4.66 | |
| Linux Linux kernel | =5.9.8 | |
| Linux Linux kernel | =5.10-rc4 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.12.6-1 |
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Reference Links
- https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211
- https://launchpad.net/bugs/cve/CVE-2020-28588
- https://git.kernel.org/linus/4f134b89a24b965991e7c345b9a4591821f7c2a6
- https://security-tracker.debian.org/tracker/CVE-2020-28588
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-28588
- https://nvd.nist.gov/vuln/detail/CVE-2020-28588
- https://ubuntu.com/security/CVE-2020-28588
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