CVE-2020-28588

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 v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS v3.0

4.0 MEDIUMCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v2.0

2.1 LOWAV:L/AC:L/Au:N/C:P/I:N/A:N

EPSS

1.10% chance of exploitation in the next 30 days, 63th percentile

Published

2021-05-10

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://talosintelligence.com/vulnerability_reports/TALOS-2020-1211

References

• CVE Record
• NVD entry

Related

• CVE-2020-28587
• CVE-2020-28589
• CVE-2020-28581
• CVE-2020-28590
• CVE-2020-28580
• CVE-2020-28591