UBUNTU-CVE-2026-23060: Null Pointer Dereference

Q: What access does an attacker need to trigger the denial of service?

The vector is local and requires low privileges. No user interaction is required.

Q: What condition triggers the kernel panic?

The affected authencesn decryption path receives an ESP/ESN-formatted associated-data input shorter than 8 bytes. This can make crypto_authenc_esn_decrypt() advance beyond the destination scatterlist and cause a NULL pointer dereference.

Q: Which Ubuntu kernel packages are listed as affected?

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

Q: What is the impact if exploitation succeeds?

Successful triggering causes a kernel panic, resulting in denial of service. The provided severity vector indicates no confidentiality or integrity impact.

Published Feb 4, 2026

Updated

In the Linux kernel, the following vulnerability has been resolved: crypto: authencesn - reject too-short AAD (assoclen<8) to match ESP/ESN spec authencesn assumes an ESP/ESN-formatted AAD. When assoclen is shorter than the minimum expected length, cryptoauthencesndecrypt() can advance past the end of the destination scatterlist and trigger a NULL pointer dereference in scatterwalkmapandcopy(), leading to a kernel panic (DoS). Add a minimum AAD length check to fail fast on invalid inputs.

Affected Software

241 affected componentsFixes available

ubuntu/linux-aws<4.4.0-1153.159

4.4.0-1153.159

ubuntu/linux-azure<4.15.0-1199.214~14.04.1

4.15.0-1199.214~14.04.1

ubuntu/linux-lts-xenial<4.4.0-279.313~14.04.1

4.4.0-279.313~14.04.1

ubuntu/linux<4.4.0-279.313

4.4.0-279.313

ubuntu/linux-aws<4.4.0-1191.206

4.4.0-1191.206

ubuntu/linux-aws-hwe<4.15.0-1190.203~16.04.1

4.15.0-1190.203~16.04.1

ubuntu/linux-azure<4.15.0-1200.215~16.04.1

4.15.0-1200.215~16.04.1

ubuntu/linux-gcp<4.15.0-1183.200~16.04.2

4.15.0-1183.200~16.04.2

ubuntu/linux-hwe<4.15.0-248.260~16.04.1

4.15.0-248.260~16.04.1

ubuntu/linux-kvm<4.4.0-1154.165

4.4.0-1154.165

ubuntu/linux-oracle<4.15.0-1153.164~16.04.1

4.15.0-1153.164~16.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-fips<4.4.0-1123.130

4.4.0-1123.130

ubuntu/linux-fips*

ubuntu/linux<4.15.0-248.260

4.15.0-248.260

ubuntu/linux-aws<4.15.0-1190.203

4.15.0-1190.203

ubuntu/linux-aws-5.0*

ubuntu/linux-aws-5.3*

ubuntu/linux-aws-5.4<5.4.0-1157.167~18.04.1

5.4.0-1157.167~18.04.1

ubuntu/linux-azure*

ubuntu/linux-azure-4.15<4.15.0-1199.214

4.15.0-1199.214

ubuntu/linux-azure-5.3*

ubuntu/linux-azure-5.4<5.4.0-1161.167~18.04.1

5.4.0-1161.167~18.04.1

ubuntu/linux-azure-edge*

ubuntu/linux-gcp*

ubuntu/linux-gcp-4.15<4.15.0-1183.200

4.15.0-1183.200

ubuntu/linux-gcp-5.3*

ubuntu/linux-gcp-5.4<5.4.0-1160.169~18.04.1

5.4.0-1160.169~18.04.1

ubuntu/linux-gke-4.15*

ubuntu/linux-gke-5.4*

ubuntu/linux-gkeop-5.4*

ubuntu/linux-hwe*

ubuntu/linux-hwe-5.4<5.4.0-228.248~18.04.1

5.4.0-228.248~18.04.1

ubuntu/linux-hwe-edge*

ubuntu/linux-ibm-5.4<5.4.0-1103.108~18.04.1

5.4.0-1103.108~18.04.1

ubuntu/linux-kvm<4.15.0-1172.177

4.15.0-1172.177

ubuntu/linux-oem*

ubuntu/linux-oracle<4.15.0-1152.163

4.15.0-1152.163

ubuntu/linux-oracle-5.0*

ubuntu/linux-oracle-5.3*

ubuntu/linux-oracle-5.4<5.4.0-1155.165~18.04.1

5.4.0-1155.165~18.04.1

ubuntu/linux-raspi-5.4<5.4.0-1140.153~18.04.1

5.4.0-1140.153~18.04.1

ubuntu/linux-aws-fips<4.15.0-2128.134

4.15.0-2128.134

ubuntu/linux-azure-fips<4.15.0-2109.115

4.15.0-2109.115

ubuntu/linux-fips<4.15.0-1145.157

4.15.0-1145.157

ubuntu/linux-gcp-fips<4.15.0-2091.97

4.15.0-2091.97

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.4.0-228.248

5.4.0-228.248

ubuntu/linux-aws<5.4.0-1157.167

5.4.0-1157.167

ubuntu/linux-aws-5.11*

ubuntu/linux-aws-5.13*

ubuntu/linux-aws-5.15<5.15.0-1104.111~20.04.1

5.15.0-1104.111~20.04.1

ubuntu/linux-aws-5.8*

ubuntu/linux-azure<5.4.0-1161.167

5.4.0-1161.167

ubuntu/linux-azure-5.11*

ubuntu/linux-azure-5.13*

ubuntu/linux-azure-5.15<5.15.0-1110.119~20.04.1

5.15.0-1110.119~20.04.1

ubuntu/linux-azure-5.8*

ubuntu/linux-azure-fde*

ubuntu/linux-bluefield<5.4.0-1116.123

5.4.0-1116.123

ubuntu/linux-gcp<5.4.0-1160.169

5.4.0-1160.169

ubuntu/linux-gcp-5.11*

ubuntu/linux-gcp-5.13*

ubuntu/linux-gcp-5.15<5.15.0-1104.113~20.04.1

5.15.0-1104.113~20.04.1

ubuntu/linux-gcp-5.8*

ubuntu/linux-gke*

ubuntu/linux-gke-5.15*

ubuntu/linux-gkeop*

ubuntu/linux-gkeop-5.15*

ubuntu/linux-hwe-5.11*

ubuntu/linux-hwe-5.13*

ubuntu/linux-hwe-5.15<5.15.0-176.186~20.04.1

5.15.0-176.186~20.04.1

ubuntu/linux-hwe-5.8*

ubuntu/linux-ibm<5.4.0-1103.108

5.4.0-1103.108

ubuntu/linux-ibm-5.15<5.15.0-1098.101~20.04.1

5.15.0-1098.101~20.04.1

ubuntu/linux-intel-5.13*

ubuntu/linux-intel-iotg-5.15<5.15.0-1099.105~20.04.1

5.15.0-1099.105~20.04.1

ubuntu/linux-iot<5.4.0-1061.64

5.4.0-1061.64

ubuntu/linux-kvm<5.4.0-1144.153

5.4.0-1144.153

ubuntu/linux-lowlatency-hwe-5.15<5.15.0-174.184~20.04.1

5.15.0-174.184~20.04.1

ubuntu/linux-nvidia-tegra-5.15<5.15.0-1057.57~20.04.1

5.15.0-1057.57~20.04.1

ubuntu/linux-oem-5.10*

ubuntu/linux-oem-5.13*

ubuntu/linux-oem-5.6*

ubuntu/linux-oracle<5.4.0-1155.165

5.4.0-1155.165

ubuntu/linux-oracle-5.11*

ubuntu/linux-oracle-5.13*

ubuntu/linux-oracle-5.15<5.15.0-1101.107~20.04.1

5.15.0-1101.107~20.04.1

ubuntu/linux-oracle-5.8*

ubuntu/linux-raspi<5.4.0-1140.153

5.4.0-1140.153

ubuntu/linux-raspi2*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.11*

ubuntu/linux-riscv-5.15<5.15.0-1098.102~20.04.1

5.15.0-1098.102~20.04.1

ubuntu/linux-riscv-5.8*

ubuntu/linux-xilinx-zynqmp<5.4.0-1075.79

5.4.0-1075.79

ubuntu/linux-aws-fips<5.4.0-1157.167+fips1

5.4.0-1157.167+fips1

ubuntu/linux-azure-fips<5.4.0-1161.167+fips1

5.4.0-1161.167+fips1

ubuntu/linux-fips<5.4.0-1131.141

5.4.0-1131.141

ubuntu/linux-gcp-fips<5.4.0-1160.169+fips1

5.4.0-1160.169+fips1

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux<5.15.0-174.184

5.15.0-174.184

ubuntu/linux-allwinner-5.19*

ubuntu/linux-aws<5.15.0-1104.111

5.15.0-1104.111

ubuntu/linux-aws-5.19*

ubuntu/linux-aws-6.2*

ubuntu/linux-aws-6.5*

ubuntu/linux-aws-6.8<6.8.0-1051.54~22.04.1

6.8.0-1051.54~22.04.1

ubuntu/linux-azure<5.15.0-1109.118

5.15.0-1109.118

ubuntu/linux-azure-5.19*

ubuntu/linux-azure-6.2*

ubuntu/linux-azure-6.5*

ubuntu/linux-azure-6.8<6.8.0-1052.58~22.04.1

6.8.0-1052.58~22.04.1

ubuntu/linux-azure-fde<5.15.0-1109.118.1

5.15.0-1109.118.1

ubuntu/linux-azure-fde-5.19*

ubuntu/linux-azure-fde-6.2*

ubuntu/linux-azure-fde-6.8<6.8.0-1058.65~22.04.1

6.8.0-1058.65~22.04.1

ubuntu/linux-gcp<5.15.0-1104.113

5.15.0-1104.113

ubuntu/linux-gcp-5.19*

ubuntu/linux-gcp-6.2*

ubuntu/linux-gcp-6.5*

ubuntu/linux-gcp-6.8<6.8.0-1053.56~22.04.1

6.8.0-1053.56~22.04.1

ubuntu/linux-gke<5.15.0-1100.106

5.15.0-1100.106

ubuntu/linux-gkeop<5.15.0-1087.95

5.15.0-1087.95

ubuntu/linux-hwe-5.19*

ubuntu/linux-hwe-6.2*

ubuntu/linux-hwe-6.5*

ubuntu/linux-hwe-6.8<6.8.0-107.107~22.04.1

6.8.0-107.107~22.04.1

ubuntu/linux-ibm<5.15.0-1098.101

5.15.0-1098.101

ubuntu/linux-ibm-6.8<6.8.0-1050.50~22.04.1

6.8.0-1050.50~22.04.1

ubuntu/linux-intel-iot-realtime*

ubuntu/linux-intel-iotg<5.15.0-1099.105

5.15.0-1099.105

ubuntu/linux-kvm<5.15.0-1096.101

5.15.0-1096.101

ubuntu/linux-lowlatency<5.15.0-174.184

5.15.0-174.184

ubuntu/linux-lowlatency-hwe-5.19*

ubuntu/linux-lowlatency-hwe-6.2*

ubuntu/linux-lowlatency-hwe-6.5*

ubuntu/linux-lowlatency-hwe-6.8<6.8.0-107.107.1~22.04.1

6.8.0-107.107.1~22.04.1

ubuntu/linux-nvidia<5.15.0-1099.100

5.15.0-1099.100

ubuntu/linux-nvidia-6.2*

ubuntu/linux-nvidia-6.5*

ubuntu/linux-nvidia-6.8<6.8.0-1050.53~22.04.1

6.8.0-1050.53~22.04.1

ubuntu/linux-nvidia-tegra<5.15.0-1056.56

5.15.0-1056.56

ubuntu/linux-nvidia-tegra-igx<5.15.0-1045.45

5.15.0-1045.45

ubuntu/linux-oem-5.17*

ubuntu/linux-oem-6.0*

ubuntu/linux-oem-6.1*

ubuntu/linux-oem-6.5*

ubuntu/linux-oracle<5.15.0-1101.107

5.15.0-1101.107

ubuntu/linux-oracle-6.5*

ubuntu/linux-oracle-6.8<6.8.0-1049.50~22.04.1

6.8.0-1049.50~22.04.1

ubuntu/linux-raspi<5.15.0-1098.101

5.15.0-1098.101

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-5.19*

ubuntu/linux-riscv-6.5*

ubuntu/linux-riscv-6.8<6.8.0-107.107~22.04.1

6.8.0-107.107~22.04.1

ubuntu/linux-starfive-5.19*

ubuntu/linux-starfive-6.2*

ubuntu/linux-starfive-6.5*

ubuntu/linux-xilinx-zynqmp<5.15.0-1068.72

5.15.0-1068.72

ubuntu/linux-bluefield<5.15.0-1087.89

5.15.0-1087.89

ubuntu/linux-intel-iot-realtime<5.15.0-1096.98

5.15.0-1096.98

ubuntu/linux-realtime<5.15.0-1103.112

5.15.0-1103.112

ubuntu/linux-realtime-6.8<6.8.1-1046.47~22.04.2

6.8.1-1046.47~22.04.2

ubuntu/linux-aws-fips*

ubuntu/linux-azure-fips*

ubuntu/linux-fips*

ubuntu/linux-gcp-fips*

ubuntu/linux-aws-fips<5.15.0-1104.111+fips1

5.15.0-1104.111+fips1

ubuntu/linux-azure-fips<5.15.0-1109.118+fips1

5.15.0-1109.118+fips1

ubuntu/linux-fips<5.15.0-174.184+fips1

5.15.0-174.184+fips1

ubuntu/linux-gcp-fips<5.15.0-1104.113+fips1

5.15.0-1104.113+fips1

ubuntu/linux<6.8.0-107.107

6.8.0-107.107

ubuntu/linux-aws<6.8.0-1051.54

6.8.0-1051.54

ubuntu/linux-aws-6.14*

ubuntu/linux-aws-6.17<6.17.0-1010.10~24.04.1

6.17.0-1010.10~24.04.1

ubuntu/linux-azure<6.8.0-1052.58

6.8.0-1052.58

ubuntu/linux-azure-6.11*

ubuntu/linux-azure-6.14*

ubuntu/linux-azure-6.17<6.17.0-1011.11~24.04.2

6.17.0-1011.11~24.04.2

ubuntu/linux-azure-fde<6.8.0-1058.65

6.8.0-1058.65

ubuntu/linux-azure-fde-6.14*

ubuntu/linux-azure-nvidia<6.8.0-1039.42

6.8.0-1039.42

ubuntu/linux-azure-nvidia-6.14*

ubuntu/linux-gcp<6.8.0-1053.56

6.8.0-1053.56

ubuntu/linux-gcp-6.11*

ubuntu/linux-gcp-6.14*

ubuntu/linux-gcp-6.17<6.17.0-1010.10~24.04.1

6.17.0-1010.10~24.04.1

ubuntu/linux-gke<6.8.0-1049.54

6.8.0-1049.54

ubuntu/linux-gkeop<6.8.0-1036.39

6.8.0-1036.39

ubuntu/linux-hwe-6.11*

ubuntu/linux-hwe-6.14*

ubuntu/linux-hwe-6.17<6.17.0-20.20~24.04.1

6.17.0-20.20~24.04.1

ubuntu/linux-ibm<6.8.0-1050.50

6.8.0-1050.50

ubuntu/linux-lowlatency<6.8.0-107.107.1

6.8.0-107.107.1

ubuntu/linux-lowlatency-hwe-6.11*

ubuntu/linux-nvidia<6.8.0-1050.53

6.8.0-1050.53

ubuntu/linux-nvidia-6.11*

ubuntu/linux-nvidia-6.17<6.17.0-1018.18

6.17.0-1018.18

ubuntu/linux-nvidia-lowlatency<6.8.0-1050.53.1

6.8.0-1050.53.1

ubuntu/linux-nvidia-tegra<6.8.0-1021.21

6.8.0-1021.21

ubuntu/linux-oem-6.11*

ubuntu/linux-oem-6.14*

ubuntu/linux-oem-6.17<6.17.0-1017.17

6.17.0-1017.17

ubuntu/linux-oem-6.8*

ubuntu/linux-oracle<6.8.0-1049.50

6.8.0-1049.50

ubuntu/linux-oracle-6.14*

ubuntu/linux-oracle-6.17<6.17.0-1010.10~24.04.1

6.17.0-1010.10~24.04.1

ubuntu/linux-raspi<6.8.0-1051.55

6.8.0-1051.55

ubuntu/linux-raspi-realtime*

ubuntu/linux-realtime*

ubuntu/linux-riscv*

ubuntu/linux-riscv-6.14*

ubuntu/linux-riscv-6.17<6.17.0-20.20.1~24.04.1

6.17.0-20.20.1~24.04.1

ubuntu/linux-xilinx<6.8.0-1028.29

6.8.0-1028.29

ubuntu/linux-bluefield<6.8.0-1017.21

6.8.0-1017.21

ubuntu/linux-raspi-realtime<6.8.0-2041.42

6.8.0-2041.42

ubuntu/linux-realtime<6.8.1-1046.47

6.8.1-1046.47

ubuntu/linux-realtime-6.14*

ubuntu/linux-realtime-6.17<6.17.0-1009.10~24.04.1

6.17.0-1009.10~24.04.1

ubuntu/linux-aws-fips<6.8.0-1051.54+fips1

6.8.0-1051.54+fips1

ubuntu/linux-azure-fips<6.8.0-1052.58+fips1

6.8.0-1052.58+fips1

ubuntu/linux-fips<6.8.0-107.107+fips1

6.8.0-107.107+fips1

ubuntu/linux-gcp-fips<6.8.0-1053.56+fips1

6.8.0-1053.56+fips1

ubuntu/linux<6.17.0-20.20

6.17.0-20.20

ubuntu/linux-aws<6.17.0-1010.10

6.17.0-1010.10

ubuntu/linux-azure<6.17.0-1011.11

6.17.0-1011.11

ubuntu/linux-azure-fde*

ubuntu/linux-gcp<6.17.0-1010.10

6.17.0-1010.10

ubuntu/linux-oracle<6.17.0-1010.10

6.17.0-1010.10

ubuntu/linux-raspi<6.17.0-1011.11

6.17.0-1011.11

ubuntu/linux-realtime<6.17.0-1009.10

6.17.0-1009.10

ubuntu/linux-riscv<6.17.0-20.20.1

6.17.0-20.20.1

ubuntu/linux-vmware*

Remediation

Recommended actions to resolve this vulnerability, in priority order.

Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1153.159
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1199.214~14.04.1
Upgrade
Upgrade ubuntu/linux-lts-xenial to a version that resolves this vulnerability.
Fixed in 4.4.0-279.313~14.04.1
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.4.0-279.313
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.4.0-1191.206
Upgrade
Upgrade ubuntu/linux-aws-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-1190.203~16.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 4.15.0-1200.215~16.04.1
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 4.15.0-1183.200~16.04.2
Upgrade
Upgrade ubuntu/linux-hwe to a version that resolves this vulnerability.
Fixed in 4.15.0-248.260~16.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.4.0-1154.165
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1153.164~16.04.1
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.4.0-1123.130
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 4.15.0-248.260
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 4.15.0-1190.203
Upgrade
Upgrade ubuntu/linux-aws-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1157.167~18.04.1
Upgrade
Upgrade ubuntu/linux-azure-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1199.214
Upgrade
Upgrade ubuntu/linux-azure-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1161.167~18.04.1
Upgrade
Upgrade ubuntu/linux-gcp-4.15 to a version that resolves this vulnerability.
Fixed in 4.15.0-1183.200
Upgrade
Upgrade ubuntu/linux-gcp-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1160.169~18.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-228.248~18.04.1
Upgrade
Upgrade ubuntu/linux-ibm-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1103.108~18.04.1
Upgrade
Upgrade ubuntu/linux-kvm to a version that resolves this vulnerability.
Fixed in 4.15.0-1172.177
Upgrade
Upgrade ubuntu/linux-oracle to a version that resolves this vulnerability.
Fixed in 4.15.0-1152.163
Upgrade
Upgrade ubuntu/linux-oracle-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1155.165~18.04.1
Upgrade
Upgrade ubuntu/linux-raspi-5.4 to a version that resolves this vulnerability.
Fixed in 5.4.0-1140.153~18.04.1
Upgrade
Upgrade ubuntu/linux-aws-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2128.134
Upgrade
Upgrade ubuntu/linux-azure-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2109.115
Upgrade
Upgrade ubuntu/linux-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-1145.157
Upgrade
Upgrade ubuntu/linux-gcp-fips to a version that resolves this vulnerability.
Fixed in 4.15.0-2091.97
Upgrade
Upgrade ubuntu/linux to a version that resolves this vulnerability.
Fixed in 5.4.0-228.248
Upgrade
Upgrade ubuntu/linux-aws to a version that resolves this vulnerability.
Fixed in 5.4.0-1157.167
Upgrade
Upgrade ubuntu/linux-aws-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1104.111~20.04.1
Upgrade
Upgrade ubuntu/linux-azure to a version that resolves this vulnerability.
Fixed in 5.4.0-1161.167
Upgrade
Upgrade ubuntu/linux-azure-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1110.119~20.04.1
Upgrade
Upgrade ubuntu/linux-bluefield to a version that resolves this vulnerability.
Fixed in 5.4.0-1116.123
Upgrade
Upgrade ubuntu/linux-gcp to a version that resolves this vulnerability.
Fixed in 5.4.0-1160.169
Upgrade
Upgrade ubuntu/linux-gcp-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1104.113~20.04.1
Upgrade
Upgrade ubuntu/linux-hwe-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-176.186~20.04.1
Upgrade
Upgrade ubuntu/linux-ibm to a version that resolves this vulnerability.
Fixed in 5.4.0-1103.108
Upgrade
Upgrade ubuntu/linux-ibm-5.15 to a version that resolves this vulnerability.
Fixed in 5.15.0-1098.101~20.04.1
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Fixed in 5.15.0-1099.105~20.04.1
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Fixed in 5.4.0-1061.64
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Fixed in 5.4.0-1144.153
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Fixed in 5.15.0-174.184~20.04.1
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Fixed in 5.15.0-1057.57~20.04.1
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Fixed in 5.4.0-1155.165
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Fixed in 5.15.0-1101.107~20.04.1
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Fixed in 5.4.0-1140.153
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Fixed in 5.15.0-1098.102~20.04.1
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Fixed in 5.4.0-1075.79
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Fixed in 5.4.0-1157.167+fips1
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Fixed in 5.4.0-1161.167+fips1
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Fixed in 5.4.0-1131.141
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Fixed in 5.4.0-1160.169+fips1
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Fixed in 5.15.0-174.184
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Fixed in 5.15.0-1104.111
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Fixed in 6.8.0-1051.54~22.04.1
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Fixed in 5.15.0-1109.118
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Fixed in 6.8.0-1052.58~22.04.1
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Fixed in 5.15.0-1109.118.1
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Fixed in 6.8.0-1058.65~22.04.1
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Fixed in 5.15.0-1104.113
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Fixed in 6.8.0-1053.56~22.04.1
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Fixed in 5.15.0-1100.106
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Fixed in 5.15.0-1087.95
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Fixed in 6.8.0-107.107~22.04.1
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Fixed in 5.15.0-1098.101
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Fixed in 6.8.0-1050.50~22.04.1
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Fixed in 5.15.0-1099.105
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Fixed in 5.15.0-1096.101
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Fixed in 5.15.0-174.184
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Fixed in 6.8.0-107.107.1~22.04.1
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Fixed in 5.15.0-1099.100
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Fixed in 6.8.0-1050.53~22.04.1
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Fixed in 5.15.0-1056.56
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Fixed in 5.15.0-1045.45
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Fixed in 5.15.0-1101.107
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Fixed in 6.8.0-1049.50~22.04.1
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Fixed in 5.15.0-1098.101
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Fixed in 6.8.0-107.107~22.04.1
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Fixed in 5.15.0-1068.72
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Fixed in 5.15.0-1087.89
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Fixed in 5.15.0-1096.98
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Fixed in 5.15.0-1103.112
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Fixed in 6.8.1-1046.47~22.04.2
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Fixed in 5.15.0-1104.111+fips1
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Fixed in 5.15.0-1109.118+fips1
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Fixed in 5.15.0-174.184+fips1
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Fixed in 5.15.0-1104.113+fips1
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Fixed in 6.8.0-107.107
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Fixed in 6.8.0-1051.54
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Fixed in 6.17.0-1010.10~24.04.1
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Fixed in 6.8.0-1052.58
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Fixed in 6.17.0-1011.11~24.04.2
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Fixed in 6.8.0-1058.65
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Fixed in 6.8.0-1039.42
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Fixed in 6.8.0-1053.56
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Fixed in 6.17.0-1010.10~24.04.1
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Fixed in 6.8.0-1049.54
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Fixed in 6.8.0-1036.39
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Fixed in 6.17.0-20.20~24.04.1
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Fixed in 6.8.0-1050.50
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Fixed in 6.8.0-107.107.1
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Fixed in 6.8.0-1050.53
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Fixed in 6.17.0-1018.18
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Fixed in 6.8.0-1050.53.1
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Fixed in 6.8.0-1021.21
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Fixed in 6.17.0-1017.17
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Fixed in 6.8.0-1049.50
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Fixed in 6.17.0-1010.10~24.04.1
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Fixed in 6.8.0-1051.55
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Fixed in 6.17.0-20.20.1~24.04.1
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Fixed in 6.8.0-1028.29
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Fixed in 6.8.0-1017.21
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Fixed in 6.8.0-2041.42
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Fixed in 6.8.1-1046.47
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Fixed in 6.17.0-1009.10~24.04.1
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Fixed in 6.8.0-1051.54+fips1
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Fixed in 6.8.0-1052.58+fips1
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Fixed in 6.8.0-107.107+fips1
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Fixed in 6.8.0-1053.56+fips1
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Fixed in 6.17.0-20.20
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Fixed in 6.17.0-1010.10
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Fixed in 6.17.0-1011.11
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Fixed in 6.17.0-1010.10
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Fixed in 6.17.0-1010.10
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Fixed in 6.17.0-1011.11
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Fixed in 6.17.0-1009.10
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Fixed in 6.17.0-20.20.1
Configuration
Reject inputs with assoclen < 8 before crypto_authenc_esn_decrypt() processes them, matching the ESP/ESN specification and preventing traversal past the destination scatterlist.
Linux kernel crypto: authencesn minimum AAD length (assoclen) = 8

Event History

Feb 4, 2026

CVE Published

via OSV·05:16 PM

Data Sourced

via OSV·05:16 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

What access does an attacker need to trigger the denial of service?

The vector is local and requires low privileges. No user interaction is required.

What condition triggers the kernel panic?

The affected authencesn decryption path receives an ESP/ESN-formatted associated-data input shorter than 8 bytes. This can make crypto_authenc_esn_decrypt() advance beyond the destination scatterlist and cause a NULL pointer dereference.

Which Ubuntu kernel packages are listed as affected?

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

What is the impact if exploitation succeeds?

Successful triggering causes a kernel panic, resulting in denial of service. The provided severity vector indicates no confidentiality or integrity impact.

UBUNTU-CVE-2026-23060: Null Pointer Dereference

Affected Software

Remediation

Event History

Frequently Asked Questions

What access does an attacker need to trigger the denial of service?

What condition triggers the kernel panic?

Which Ubuntu kernel packages are listed as affected?

What is the impact if exploitation succeeds?

Company

Resources

Contact

Frequently Asked Questions

What access does an attacker need to trigger the denial of service?

What condition triggers the kernel panic?

Which Ubuntu kernel packages are listed as affected?

What is the impact if exploitation succeeds?