CVE & CISA-KEV Catalog

CVE-2021-47330

MEDIUM
5.5
CVSS v3
NVD

Description

In the Linux kernel, the following vulnerability has been resolved: tty: serial: 8250: serial_cs: Fix a memory leak in error handling path In the probe function, if the final 'serial_config()' fails, 'info' is leaking. Add a resource handling path to free this memory.

CWE-401Missing Release of Memory (Memory Leak)

How to fix

Remediation Available
linuxDebian
Fixed in:5.10.70-1CVE-2021-47330
Fixed in:5.14.6-1CVE-2021-47330
Fixed in:5.14.6-1CVE-2021-47330
Fixed in:5.14.6-1CVE-2021-47330
linuxUbuntu
Fixed in:4.4.0-274.308USN-7863-1
linux-awsUbuntu
Fixed in:4.4.0-1149.155USN-7863-1
Fixed in:4.4.0-1187.202USN-7863-1
linux-fipsUbuntu
Fixed in:4.4.0-1119.126USN-7865-1
linux-image-4.4.0-1119-fipsUbuntu
Fixed in:4.4.0-1119.126USN-7865-1
linux-image-4.4.0-1149-awsUbuntu
Fixed in:4.4.0-1149.155USN-7863-1
linux-image-4.4.0-1150-kvmUbuntu
Fixed in:4.4.0-1150.161USN-7863-1
linux-image-4.4.0-1187-awsUbuntu
Fixed in:4.4.0-1187.202USN-7863-1
linux-image-4.4.0-274-genericUbuntu
Fixed in:4.4.0-274.308~14.04.1USN-7863-1
Fixed in:4.4.0-274.308USN-7863-1
linux-image-4.4.0-274-lowlatencyUbuntu
Fixed in:4.4.0-274.308~14.04.1USN-7863-1
Fixed in:4.4.0-274.308USN-7863-1
linux-image-awsUbuntu
Fixed in:4.4.0.1149.146USN-7863-1
Fixed in:4.4.0.1187.191USN-7863-1
linux-image-fipsUbuntu
Fixed in:4.4.0.1119.120USN-7865-1
linux-image-genericUbuntu
Fixed in:4.4.0.274.280USN-7863-1
linux-image-generic-lts-xenialUbuntu
Fixed in:4.4.0.274.308~14.04.1USN-7863-1
Fixed in:4.4.0.274.280USN-7863-1
linux-image-kvmUbuntu
Fixed in:4.4.0.1150.147USN-7863-1
linux-image-lowlatencyUbuntu
Fixed in:4.4.0.274.280USN-7863-1
linux-image-lowlatency-lts-xenialUbuntu
Fixed in:4.4.0.274.308~14.04.1USN-7863-1
Fixed in:4.4.0.274.280USN-7863-1
linux-image-virtualUbuntu
Fixed in:4.4.0.274.280USN-7863-1
linux-image-virtual-lts-xenialUbuntu
Fixed in:4.4.0.274.308~14.04.1USN-7863-1
Fixed in:4.4.0.274.280USN-7863-1
linux-kvmUbuntu
Fixed in:4.4.0-1150.161USN-7863-1
linux-lts-xenialUbuntu
Fixed in:4.4.0-274.308~14.04.1USN-7863-1

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

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

0.24%probability of exploitation in 30 days
16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Related Vulnerabilities

Other CWE-401 (Missing Release of Memory (Memory Leak)) vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-13934High7.564%-Fix
CVE-2016-6304High7.563%-Fix
CVE-2019-12265Medium5.355%-Fix
CVE-2001-0136Medium5.045%--
CVE-2016-4232High7.536%--
CVE-2001-0543Medium5.021%--
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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 2024-12-24.