UBUNTU-CVE-2021-47330: Low severity ubuntu/linux-azure vulnerability

Q: Which Ubuntu kernel package variants are listed as affected?

The listed packages are ubuntu/linux, ubuntu/linux-aws, ubuntu/linux-aws-fips, ubuntu/linux-azure, ubuntu/linux-azure-fips, ubuntu/linux-fips, ubuntu/linux-gcp, and ubuntu/linux-gcp-fips.

Q: Under what condition does the memory leak occur?

The leak occurs during the serial_cs driver probe error-handling path when the final serial_config() call fails. The allocated info memory is not freed in that failure case.

Published May 21, 2024

Updated

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

Affected Software

119 affected componentsFixes available

ubuntu/linux-azure<4.15.0-1123.136~14.04.1

4.15.0-1123.136~14.04.1

ubuntu/linux*

ubuntu/linux-aws<4.4.0-1149.155

4.4.0-1149.155

ubuntu/linux-lts-xenial<4.4.0-274.308~14.04.1

4.4.0-274.308~14.04.1

ubuntu/linux<4.4.0-274.308

4.4.0-274.308

ubuntu/linux-aws<4.4.0-1187.202

4.4.0-1187.202

ubuntu/linux-aws-hwe<4.15.0-1111.118~16.04.1

4.15.0-1111.118~16.04.1

ubuntu/linux-azure<4.15.0-1123.136~16.04.1

4.15.0-1123.136~16.04.1

ubuntu/linux-gcp<4.15.0-1108.122~16.04.1

4.15.0-1108.122~16.04.1

ubuntu/linux-hwe<4.15.0-156.163~16.04.1

4.15.0-156.163~16.04.1

ubuntu/linux-kvm<4.4.0-1150.161

4.4.0-1150.161

ubuntu/linux-oracle<4.15.0-1080.88~16.04.1

4.15.0-1080.88~16.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-fips<4.4.0-1119.126

4.4.0-1119.126

ubuntu/linux-fips*

ubuntu/linux<4.15.0-156.163

4.15.0-156.163

ubuntu/linux-aws<4.15.0-1111.118

4.15.0-1111.118

ubuntu/linux-aws-5.4<5.4.0-1057.60~18.04.1

5.4.0-1057.60~18.04.1

ubuntu/linux-azure-4.15<4.15.0-1123.136

4.15.0-1123.136

ubuntu/linux-azure-5.4<5.4.0-1059.62~18.04.1

5.4.0-1059.62~18.04.1

ubuntu/linux-gcp-4.15<4.15.0-1108.122

4.15.0-1108.122

ubuntu/linux-gcp-5.4<5.4.0-1053.57~18.04.1

5.4.0-1053.57~18.04.1

ubuntu/linux-hwe-5.4<5.4.0-87.98~18.04.1

5.4.0-87.98~18.04.1

ubuntu/linux-kvm<4.15.0-1099.101

4.15.0-1099.101

ubuntu/linux-oracle<4.15.0-1080.88

4.15.0-1080.88

ubuntu/linux-oracle-5.4<5.4.0-1055.59~18.04.1

5.4.0-1055.59~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1044.48~18.04.1

5.4.0-1044.48~18.04.1

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-azure*

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-5.3*

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-edge*

ubuntu/linux-oem*

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-aws-fips<4.15.0-2053.55

4.15.0-2053.55

ubuntu/linux-azure-fips<4.15.0-2035.39

4.15.0-2035.39

ubuntu/linux-fips<4.15.0-1069.78

4.15.0-1069.78

ubuntu/linux-gcp-fips<4.15.0-2018.20

4.15.0-2018.20

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.4.0-88.99

5.4.0-88.99

ubuntu/linux-aws<5.4.0-1057.60

5.4.0-1057.60

ubuntu/linux-azure<5.4.0-1059.62

5.4.0-1059.62

ubuntu/linux-bluefield<5.4.0-1019.22

5.4.0-1019.22

ubuntu/linux-gcp<5.4.0-1053.57

5.4.0-1053.57

ubuntu/linux-gkeop<5.4.0-1024.25

5.4.0-1024.25

ubuntu/linux-ibm<5.4.0-1005.6

5.4.0-1005.6

ubuntu/linux-kvm<5.4.0-1047.49

5.4.0-1047.49

ubuntu/linux-oracle<5.4.0-1055.59

5.4.0-1055.59

ubuntu/linux-raspi<5.4.0-1044.48

5.4.0-1044.48

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.8*

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

ubuntu/linux-gcp-5.8*

ubuntu/linux-gke*

ubuntu/linux-gke-5.15*

ubuntu/linux-hwe-5.11*

ubuntu/linux-hwe-5.13*

ubuntu/linux-hwe-5.8*

ubuntu/linux-intel-5.13*

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.8*

ubuntu/linux-aws-fips<5.4.0-1069.73+fips2

5.4.0-1069.73+fips2

ubuntu/linux-azure-fips<5.4.0-1073.76+fips1

5.4.0-1073.76+fips1

ubuntu/linux-fips<5.4.0-1034.40

5.4.0-1034.40

ubuntu/linux-gcp-fips<5.4.0-1067.71~20.04.1

5.4.0-1067.71~20.04.1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-nvidia-6.2*

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-raspi-realtime*

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1123.136~14.04.1
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1149.155
Upgrade
Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.
Fixed in 4.4.0-274.308~14.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.4.0-274.308
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1187.202
Upgrade
Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-1111.118~16.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1123.136~16.04.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 4.15.0-1108.122~16.04.1
Upgrade
Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-156.163~16.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.4.0-1150.161
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1080.88~16.04.1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.4.0-1119.126
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.15.0-156.163
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.15.0-1111.118
Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1057.60~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1123.136
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1059.62~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1108.122
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1053.57~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-87.98~18.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.15.0-1099.101
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1080.88
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1055.59~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1044.48~18.04.1
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2053.55
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2035.39
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-1069.78
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2018.20
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-88.99
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.4.0-1057.60
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.4.0-1059.62
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.4.0-1019.22
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.4.0-1053.57
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.4.0-1024.25
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.4.0-1005.6
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.4.0-1047.49
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.4.0-1055.59
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.4.0-1044.48
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1069.73+fips2
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1073.76+fips1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1034.40
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1067.71~20.04.1
Compensating control
In the Linux kernel tty serial 8250 serial_cs probe error-handling path, free the leaked 'info' resource when the final 'serial_config()' call fails.

Event History

May 21, 2024

CVE Published

via OSV·03:15 PM

Data Sourced

via OSV·03:15 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

Which Ubuntu kernel package variants are listed as affected?

The listed packages are ubuntu/linux, ubuntu/linux-aws, ubuntu/linux-aws-fips, ubuntu/linux-azure, ubuntu/linux-azure-fips, ubuntu/linux-fips, ubuntu/linux-gcp, and ubuntu/linux-gcp-fips.

Under what condition does the memory leak occur?

The leak occurs during the serial_cs driver probe error-handling path when the final serial_config() call fails. The allocated info memory is not freed in that failure case.

UBUNTU-CVE-2021-47330: Low severity ubuntu/linux-azure vulnerability

Affected Software

Remediation

Event History

Frequently Asked Questions

Which Ubuntu kernel package variants are listed as affected?

Under what condition does the memory leak occur?

Company

Resources

Contact

Frequently Asked Questions

Which Ubuntu kernel package variants are listed as affected?

Under what condition does the memory leak occur?