UBUNTU-CVE-2023-46838: High severity ubuntu/linux-azure vulnerability

Q: Which Ubuntu kernel packages are identified as affected?

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

Q: What conditions are needed to trigger the issue?

The issue involves Xen virtual network transmit requests with multiple parts where, after the initial portion, request parts may be zero length. A converted request can trigger a NULL dereference when all parts mapped to a particular SKB are zero length.

Q: What is the likely impact of successful exploitation?

The vulnerability can cause a NULL dereference in Linux core networking code. The supplied severity vector indicates high availability impact, while confidentiality and integrity impacts are listed as none.

Published Jan 29, 2024

Updated

Transmit requests in Xen's virtual network protocol can consist of multiple parts. While not really useful, except for the initial part any of them may be of zero length, i.e. carry no data at all. Besides a certain initial portion of the to be transferred data, these parts are directly translated into what Linux calls SKB fragments. Such converted request parts can, when for a particular SKB they are all of length zero, lead to a de-reference of NULL in core networking code.

Affected Software

162 affected componentsFixes available

ubuntu/linux-azure<4.15.0-1175.190~14.04.1

4.15.0-1175.190~14.04.1

ubuntu/linux-aws-hwe<4.15.0-1166.179~16.04.1

4.15.0-1166.179~16.04.1

ubuntu/linux-azure<4.15.0-1175.190~16.04.1

4.15.0-1175.190~16.04.1

ubuntu/linux-gcp<4.15.0-1160.177~16.04.1

4.15.0-1160.177~16.04.1

ubuntu/linux-hwe<4.15.0-223.235~16.04.1

4.15.0-223.235~16.04.1

ubuntu/linux-oracle<4.15.0-1129.140~16.04.1

4.15.0-1129.140~16.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux<4.15.0-223.235

4.15.0-223.235

ubuntu/linux-aws<4.15.0-1166.179

4.15.0-1166.179

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4<5.4.0-1122.132~18.04.1

5.4.0-1122.132~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-4.15<4.15.0-1175.190

4.15.0-1175.190

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1127.134~18.04.1

5.4.0-1127.134~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15<4.15.0-1160.177

4.15.0-1160.177

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1126.135~18.04.1

5.4.0-1126.135~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-175.195~18.04.1

5.4.0-175.195~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1069.74~18.04.1

5.4.0-1069.74~18.04.1

ubuntu/linux-kvm<4.15.0-1150.155

4.15.0-1150.155

ubuntu/linux-oem*

ubuntu/linux-oracle<4.15.0-1129.140

4.15.0-1129.140

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1121.130~18.04.1

5.4.0-1121.130~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1106.118~18.04.1

5.4.0-1106.118~18.04.1

ubuntu/linux-aws-fips<4.15.0-2105.111

4.15.0-2105.111

ubuntu/linux-azure-fips<4.15.0-2084.90

4.15.0-2084.90

ubuntu/linux-fips<4.15.0-1121.132

4.15.0-1121.132

ubuntu/linux-gcp-fips<4.15.0-2068.73

4.15.0-2068.73

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.4.0-176.196

5.4.0-176.196

ubuntu/linux-aws<5.4.0-1122.132

5.4.0-1122.132

ubuntu/linux-aws-5.15<5.15.0-1057.63~20.04.1

5.15.0-1057.63~20.04.1

ubuntu/linux-azure<5.4.0-1127.134

5.4.0-1127.134

ubuntu/linux-azure-5.15<5.15.0-1060.69~20.04.1

5.15.0-1060.69~20.04.1

ubuntu/linux-bluefield<5.4.0-1082.89

5.4.0-1082.89

ubuntu/linux-gcp<5.4.0-1126.135

5.4.0-1126.135

ubuntu/linux-gcp-5.15<5.15.0-1055.63~20.04.1

5.15.0-1055.63~20.04.1

ubuntu/linux-gkeop<5.4.0-1089.93

5.4.0-1089.93

ubuntu/linux-gkeop-5.15<5.15.0-1040.46~20.04.1

5.15.0-1040.46~20.04.1

ubuntu/linux-hwe-5.15<5.15.0-102.112~20.04.1

5.15.0-102.112~20.04.1

ubuntu/linux-ibm<5.4.0-1069.74

5.4.0-1069.74

ubuntu/linux-ibm-5.15<5.15.0-1050.53~20.04.1

5.15.0-1050.53~20.04.1

ubuntu/linux-intel-iotg-5.15<5.15.0-1052.58~20.04.1

5.15.0-1052.58~20.04.1

ubuntu/linux-iot<5.4.0-1034.35

5.4.0-1034.35

ubuntu/linux-kvm<5.4.0-1110.117

5.4.0-1110.117

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-102.112~20.04.1

5.15.0-102.112~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1025.25~20.04.1

5.15.0-1025.25~20.04.1

ubuntu/linux-oracle<5.4.0-1121.130

5.4.0-1121.130

ubuntu/linux-oracle-5.15<5.15.0-1055.61~20.04.1

5.15.0-1055.61~20.04.1

ubuntu/linux-raspi<5.4.0-1106.118

5.4.0-1106.118

ubuntu/linux-riscv-5.15<5.15.0-1053.57~20.04.1

5.15.0-1053.57~20.04.1

ubuntu/linux-xilinx-zynqmp<5.4.0-1041.45

5.4.0-1041.45

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<5.4.0-1122.132+fips1

5.4.0-1122.132+fips1

ubuntu/linux-azure-fips<5.4.0-1127.134+fips1

5.4.0-1127.134+fips1

ubuntu/linux-fips<5.4.0-1096.106

5.4.0-1096.106

ubuntu/linux-gcp-fips<5.4.0-1126.135+fips1

5.4.0-1126.135+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-102.112

5.15.0-102.112

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1057.63

5.15.0-1057.63

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5<6.5.0-1017.17~22.04.2

6.5.0-1017.17~22.04.2

ubuntu/linux-azure<5.15.0-1060.69

5.15.0-1060.69

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5<6.5.0-1018.19~22.04.2

6.5.0-1018.19~22.04.2

ubuntu/linux-azure-fde<5.15.0-1060.69.1

5.15.0-1060.69.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-gcp<5.15.0-1055.63

5.15.0-1055.63

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5<6.5.0-1017.17~22.04.1

6.5.0-1017.17~22.04.1

ubuntu/linux-gke<5.15.0-1054.59

5.15.0-1054.59

ubuntu/linux-gkeop<5.15.0-1040.46

5.15.0-1040.46

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5<6.5.0-27.28~22.04.1

6.5.0-27.28~22.04.1

ubuntu/linux-ibm<5.15.0-1050.53

5.15.0-1050.53

ubuntu/linux-intel-iotg<5.15.0-1052.58

5.15.0-1052.58

ubuntu/linux-kvm<5.15.0-1054.59

5.15.0-1054.59

ubuntu/linux-lowlatency<5.15.0-102.112

5.15.0-102.112

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5<6.5.0-27.28.1~22.04.1

6.5.0-27.28.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1048.48

5.15.0-1048.48

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5<6.5.0-1014.14

6.5.0-1014.14

ubuntu/linux-nvidia-tegra<5.15.0-1025.25

5.15.0-1025.25

ubuntu/linux-nvidia-tegra-igx<5.15.0-1012.12

5.15.0-1012.12

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1<6.1.0-1035.35

6.1.0-1035.35

ubuntu/linux-oem-6.5<6.5.0-1019.20

6.5.0-1019.20

ubuntu/linux-oracle<5.15.0-1055.61

5.15.0-1055.61

ubuntu/linux-oracle-6.5<6.5.0-1020.20~22.04.1

6.5.0-1020.20~22.04.1

ubuntu/linux-raspi<5.15.0-1050.53

5.15.0-1050.53

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5<6.5.0-27.28.1~22.04.1

6.5.0-27.28.1~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5<6.5.0-1011.12~22.04.1

6.5.0-1011.12~22.04.1

ubuntu/linux-xilinx-zynqmp<5.15.0-1030.34

5.15.0-1030.34

ubuntu/linux-bluefield<5.15.0-1040.42

5.15.0-1040.42

ubuntu/linux-intel-iot-realtime<5.15.0-1050.52

5.15.0-1050.52

ubuntu/linux-realtime<5.15.0-1058.66

5.15.0-1058.66

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1057.63+fips1

5.15.0-1057.63+fips1

ubuntu/linux-azure-fips<5.15.0-1060.69+fips1

5.15.0-1060.69+fips1

ubuntu/linux-fips<5.15.0-102.112+fips1

5.15.0-102.112+fips1

ubuntu/linux-gcp-fips<5.15.0-1055.63+fips2

5.15.0-1055.63+fips2

ubuntu/linux-raspi-realtime<6.8.0-2001.1

6.8.0-2001.1

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 4.15.0-1175.190~14.04.1
Upgrade
Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-1166.179~16.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1175.190~16.04.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 4.15.0-1160.177~16.04.1
Upgrade
Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-223.235~16.04.1
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1129.140~16.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.15.0-223.235
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.15.0-1166.179
Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1122.132~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1175.190
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1127.134~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1160.177
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1126.135~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-175.195~18.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1069.74~18.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.15.0-1150.155
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1129.140
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1121.130~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1106.118~18.04.1
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2105.111
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2084.90
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-1121.132
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2068.73
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-176.196
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.4.0-1122.132
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1057.63~20.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.4.0-1127.134
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1060.69~20.04.1
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.4.0-1082.89
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.4.0-1126.135
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1055.63~20.04.1
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.4.0-1089.93
Upgrade
Upgrade ubuntu/linux-gkeop-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1040.46~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-102.112~20.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.4.0-1069.74
Upgrade
Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1050.53~20.04.1
Upgrade
Upgrade ubuntu/linux-intel-iotg-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1052.58~20.04.1
Upgrade
Upgrade ubuntu/linux-iot to a version that resolves this vulnerability.
Fixed in 5.4.0-1034.35
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.4.0-1110.117
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-102.112~20.04.1
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1025.25~20.04.1
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.4.0-1121.130
Upgrade
Upgrade ubuntu/linux-oracle-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1055.61~20.04.1
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.4.0-1106.118
Upgrade
Upgrade ubuntu/linux-riscv-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1053.57~20.04.1
Upgrade
Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.
Fixed in 5.4.0-1041.45
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1122.132+fips1
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1127.134+fips1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1096.106
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 5.4.0-1126.135+fips1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.15.0-102.112
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.15.0-1057.63
Upgrade
Upgrade ubuntu/linux-aws-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-1017.17~22.04.2
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.15.0-1060.69
Upgrade
Upgrade ubuntu/linux-azure-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-1018.19~22.04.2
Upgrade
Upgrade ubuntu/linux-azure-fde to a version that resolves this vulnerability.
Fixed in 5.15.0-1060.69.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.15.0-1055.63
Upgrade
Upgrade ubuntu/linux-gcp-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-1017.17~22.04.1
Upgrade
Upgrade ubuntu/linux-gke to a version that resolves this vulnerability.
Fixed in 5.15.0-1054.59
Upgrade
Upgrade ubuntu/linux-gkeop to a version that resolves this vulnerability.
Fixed in 5.15.0-1040.46
Upgrade
Upgrade ubuntu/linux-hwe-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-27.28~22.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.15.0-1050.53
Upgrade
Upgrade ubuntu/linux-intel-iotg to a version that resolves this vulnerability.
Fixed in 5.15.0-1052.58
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 5.15.0-1054.59
Upgrade
Upgrade ubuntu/linux-lowlatency to a version that resolves this vulnerability.
Fixed in 5.15.0-102.112
Upgrade
Upgrade ubuntu/linux-lowlatency-hwe-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-27.28.1~22.04.1
Upgrade
Upgrade ubuntu/linux-nvidia to a version that resolves this vulnerability.
Fixed in 5.15.0-1048.48
Upgrade
Upgrade ubuntu/linux-nvidia-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-1014.14
Upgrade
Upgrade ubuntu/linux-nvidia-tegra to a version that resolves this vulnerability.
Fixed in 5.15.0-1025.25
Upgrade
Upgrade ubuntu/linux-nvidia-tegra-igx to a version that resolves this vulnerability.
Fixed in 5.15.0-1012.12
Upgrade
Upgrade ubuntu/linux-oem-6.1 to a version that resolves this vulnerability.
Fixed in 6.1.0-1035.35
Upgrade
Upgrade ubuntu/linux-oem-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-1019.20
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 5.15.0-1055.61
Upgrade
Upgrade ubuntu/linux-oracle-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-1020.20~22.04.1
Upgrade
Upgrade ubuntu/linux-raspi to a version that resolves this vulnerability.
Fixed in 5.15.0-1050.53
Upgrade
Upgrade ubuntu/linux-riscv-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-27.28.1~22.04.1
Upgrade
Upgrade ubuntu/linux-starfive-6.5 to a version that resolves this vulnerability.
Fixed in 6.5.0-1011.12~22.04.1
Upgrade
Upgrade ubuntu/linux-xilinx-zynqmp to a version that resolves this vulnerability.
Fixed in 5.15.0-1030.34
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.15.0-1040.42
Upgrade
Upgrade ubuntu/linux-intel-iot-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1050.52
Upgrade
Upgrade ubuntu/linux-realtime to a version that resolves this vulnerability.
Fixed in 5.15.0-1058.66
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 5.15.0-1057.63+fips1
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 5.15.0-1060.69+fips1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 5.15.0-102.112+fips1
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 5.15.0-1055.63+fips2
Upgrade
Upgrade ubuntu/linux-raspi-realtime to a version that resolves this vulnerability.
Fixed in 6.8.0-2001.1

Event History

Jan 29, 2024

CVE Published

via OSV·11:15 AM

Data Sourced

via OSV·11:15 AM

DescriptionSeverityAffected Software

Frequently Asked Questions

Which Ubuntu kernel packages are identified as affected?

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

What conditions are needed to trigger the issue?

The issue involves Xen virtual network transmit requests with multiple parts where, after the initial portion, request parts may be zero length. A converted request can trigger a NULL dereference when all parts mapped to a particular SKB are zero length.

What is the likely impact of successful exploitation?

The vulnerability can cause a NULL dereference in Linux core networking code. The supplied severity vector indicates high availability impact, while confidentiality and integrity impacts are listed as none.

UBUNTU-CVE-2023-46838: High severity ubuntu/linux-azure vulnerability

Affected Software

Remediation

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Frequently Asked Questions

Which Ubuntu kernel packages are identified as affected?

What conditions are needed to trigger the issue?

What is the likely impact of successful exploitation?

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Frequently Asked Questions

Which Ubuntu kernel packages are identified as affected?

What conditions are needed to trigger the issue?

What is the likely impact of successful exploitation?