Is CVE-2020-28588 in the CISA KEV catalog?

No. CVE-2020-28588 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-28588?

CVE-2020-28588 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2020-28588?

CVE-2020-28588 has an EPSS score of 1.10% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-28588?

Upgrade linux on debian 11 to 5.9.15-1 or later. Fixes are available for 62 affected products.

CVE & CISA-KEV Catalog

CVE-2020-28588

MEDIUM

5.5

CVSS v3

NVD

Description

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.

CWE-681

How to fix

Remediation Available

linuxDebian

Fixed in:5.9.15-1CVE-2020-28588

linuxUbuntu

Fixed in:5.4.0-66.74USN-4750-1

linux-awsUbuntu

Fixed in:5.4.0-1038.40USN-4750-1

linux-aws-5.4Ubuntu

Fixed in:5.4.0-1038.40~18.04.1USN-4750-1

linux-azureUbuntu

Fixed in:5.4.0-1040.42USN-4750-1

linux-azure-5.4Ubuntu

Fixed in:5.4.0-1040.42~18.04.1USN-4750-1

linux-gcpUbuntu

Fixed in:5.4.0-1037.40USN-4750-1

linux-gcp-5.4Ubuntu

Fixed in:5.4.0-1037.40~18.04.1USN-4750-1

linux-gke-5.4Ubuntu

Fixed in:5.4.0-1036.38~18.04.1USN-4750-1

linux-gkeopUbuntu

Fixed in:5.4.0-1010.11USN-4750-1

linux-gkeop-5.4Ubuntu

Fixed in:5.4.0-1010.11~18.04.1USN-4750-1

linux-hwe-5.4Ubuntu

Fixed in:5.4.0-66.74~18.04.2USN-4750-1

linux-hwe-5.8Ubuntu

Fixed in:5.8.0-44.50~20.04.1USN-4751-1

linux-image-5.4.0-1010-gkeopUbuntu

Fixed in:5.4.0-1010.11~18.04.1USN-4750-1

Fixed in:5.4.0-1010.11USN-4750-1

linux-image-5.4.0-1029-raspiUbuntu

Fixed in:5.4.0-1029.32~18.04.1USN-4750-1

Fixed in:5.4.0-1029.32USN-4750-1

linux-image-5.4.0-1033-kvmUbuntu

Fixed in:5.4.0-1033.34USN-4750-1

linux-image-5.4.0-1036-gkeUbuntu

Fixed in:5.4.0-1036.38~18.04.1USN-4750-1

linux-image-5.4.0-1037-gcpUbuntu

Fixed in:5.4.0-1037.40~18.04.1USN-4750-1

Fixed in:5.4.0-1037.40USN-4750-1

linux-image-5.4.0-1038-awsUbuntu

Fixed in:5.4.0-1038.40~18.04.1USN-4750-1

Fixed in:5.4.0-1038.40USN-4750-1

linux-image-5.4.0-1038-oracleUbuntu

Fixed in:5.4.0-1038.41~18.04.1USN-4750-1

Fixed in:5.4.0-1038.41USN-4750-1

linux-image-5.4.0-1040-azureUbuntu

Fixed in:5.4.0-1040.42~18.04.1USN-4750-1

Fixed in:5.4.0-1040.42USN-4750-1

linux-image-5.4.0-66-genericUbuntu

Fixed in:5.4.0-66.74~18.04.2USN-4750-1

Fixed in:5.4.0-66.74USN-4750-1

linux-image-5.4.0-66-generic-lpaeUbuntu

Fixed in:5.4.0-66.74~18.04.2USN-4750-1

Fixed in:5.4.0-66.74USN-4750-1

linux-image-5.4.0-66-lowlatencyUbuntu

Fixed in:5.4.0-66.74~18.04.2USN-4750-1

Fixed in:5.4.0-66.74USN-4750-1

linux-image-5.6.0-1048-oemUbuntu

Fixed in:5.6.0-1048.52USN-4752-1

linux-image-5.8.0-44-genericUbuntu

Fixed in:5.8.0-44.50~20.04.1USN-4751-1

linux-image-5.8.0-44-generic-lpaeUbuntu

Fixed in:5.8.0-44.50~20.04.1USN-4751-1

linux-image-5.8.0-44-lowlatencyUbuntu

Fixed in:5.8.0-44.50~20.04.1USN-4751-1

linux-image-awsUbuntu

Fixed in:5.4.0.1038.22USN-4750-1

Fixed in:5.4.0.1038.39USN-4750-1

linux-image-azureUbuntu

Fixed in:5.4.0.1040.20USN-4750-1

Fixed in:5.4.0.1040.38USN-4750-1

linux-image-gcpUbuntu

Fixed in:5.4.0.1037.24USN-4750-1

Fixed in:5.4.0.1037.46USN-4750-1

linux-image-genericUbuntu

Fixed in:5.4.0.66.69USN-4750-1

linux-image-generic-64k-hwe-20.04Ubuntu

Fixed in:5.8.0.44.50~20.04.30USN-4751-1

linux-image-generic-hwe-18.04Ubuntu

Fixed in:5.4.0.66.74~18.04.61USN-4750-1

linux-image-generic-hwe-20.04Ubuntu

Fixed in:5.8.0.44.50~20.04.30USN-4751-1

linux-image-generic-lpaeUbuntu

Fixed in:5.4.0.66.69USN-4750-1

linux-image-generic-lpae-hwe-18.04Ubuntu

Fixed in:5.4.0.66.74~18.04.61USN-4750-1

linux-image-generic-lpae-hwe-20.04Ubuntu

Fixed in:5.8.0.44.50~20.04.30USN-4751-1

linux-image-gke-5.4Ubuntu

Fixed in:5.4.0.1036.38~18.04.4USN-4750-1

linux-image-gkeopUbuntu

Fixed in:5.4.0.1010.13USN-4750-1

linux-image-gkeop-5.4Ubuntu

Fixed in:5.4.0.1010.11~18.04.11USN-4750-1

Fixed in:5.4.0.1010.13USN-4750-1

linux-image-kvmUbuntu

Fixed in:5.4.0.1033.31USN-4750-1

linux-image-lowlatencyUbuntu

Fixed in:5.4.0.66.69USN-4750-1

linux-image-lowlatency-hwe-18.04Ubuntu

Fixed in:5.4.0.66.74~18.04.61USN-4750-1

linux-image-lowlatency-hwe-20.04Ubuntu

Fixed in:5.8.0.44.50~20.04.30USN-4751-1

linux-image-oemUbuntu

Fixed in:5.4.0.66.74~18.04.61USN-4750-1

Fixed in:5.4.0.66.69USN-4750-1

linux-image-oem-20.04Ubuntu

Fixed in:5.6.0.1048.44USN-4752-1

linux-image-oem-osp1Ubuntu

Fixed in:5.4.0.66.74~18.04.61USN-4750-1

Fixed in:5.4.0.66.69USN-4750-1

linux-image-oracleUbuntu

Fixed in:5.4.0.1038.41~18.04.21USN-4750-1

Fixed in:5.4.0.1038.35USN-4750-1

linux-image-raspiUbuntu

Fixed in:5.4.0.1029.64USN-4750-1

linux-image-raspi-hwe-18.04Ubuntu

Fixed in:5.4.0.1029.32USN-4750-1

linux-image-raspi2Ubuntu

Fixed in:5.4.0.1029.64USN-4750-1

linux-image-snapdragon-hwe-18.04Ubuntu

Fixed in:5.4.0.66.74~18.04.61USN-4750-1

linux-image-virtualUbuntu

Fixed in:5.4.0.66.69USN-4750-1

linux-image-virtual-hwe-18.04Ubuntu

Fixed in:5.4.0.66.74~18.04.61USN-4750-1

linux-image-virtual-hwe-20.04Ubuntu

Fixed in:5.8.0.44.50~20.04.30USN-4751-1

linux-kvmUbuntu

Fixed in:5.4.0-1033.34USN-4750-1

linux-oem-5.6Ubuntu

Fixed in:5.6.0-1048.52USN-4752-1

linux-oracleUbuntu

Fixed in:5.4.0-1038.41USN-4750-1

linux-oracle-5.4Ubuntu

Fixed in:5.4.0-1038.41~18.04.1USN-4750-1

linux-raspiUbuntu

Fixed in:5.4.0-1029.32USN-4750-1

linux-raspi-5.4Ubuntu

Fixed in:5.4.0-1029.32~18.04.1USN-4750-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

1.10%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Exploit1

talosintelligence.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.