CVE & CISA-KEV Catalog

CVE-2020-35508

MEDIUM
4.5
CVSS v3
NVD

Description

A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.

How to fix

Remediation Available
linuxDebian
Fixed in:5.9.9-1CVE-2020-35508
Fixed in:5.9.9-1CVE-2020-35508
Fixed in:5.9.9-1CVE-2020-35508
Fixed in:5.9.9-1CVE-2020-35508
linux-hwe-5.8Ubuntu
Fixed in:5.8.0-44.50~20.04.1USN-4751-1
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-generic-64k-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-image-generic-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-image-generic-lpae-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-image-lowlatency-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-image-oem-20.04Ubuntu
Fixed in:5.6.0.1048.44USN-4752-1
linux-image-virtual-hwe-20.04Ubuntu
Fixed in:5.8.0.44.50~20.04.30USN-4751-1
linux-oem-5.6Ubuntu
Fixed in:5.6.0-1048.52USN-4752-1

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 ComplexityHigh
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityLow
IntegrityLow
AvailabilityLow

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

Exploit Intelligence

0.22%probability of exploitation in 30 days
13thpercentile

Low risk: more likely to be exploited than 13% of all known CVEs.

References

Related Vulnerabilities

Other CWE-665 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2022-0847High7.888%KEVFix
CVE-2022-22719High7.570%-Fix
CVE-2020-28019High7.561%-Fix
CVE-2022-46164Critical9.449%-Fix
CVE-2022-37128Critical9.821%--
CVE-2019-14271Critical9.819%-Fix
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CVE-2020-35508 severity badge

Markdown

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HTML

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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.