In the Linux kernel, the following vulnerability has been resolved: PCI: endpoint: Fix NULL pointer dereference for ->get_features() get_features ops of pci_epc_ops may return NULL, causing NULL pointer dereference in pci_epf_test_alloc_space function. Let us add a check for pci_epc_feature pointer in pci_epf_test_bind before we access it to avoid any such NULL pointer dereference and return -ENOTSUPP in case pci_epc_feature is not found. When the patch is not applied and EPC features is not implemented in the platform driver, we see the following dump due to kernel NULL pointer dereference. Call trace: pci_epf_test_bind+0xf4/0x388 pci_epf_bind+0x3c/0x80 pci_epc_epf_link+0xa8/0xcc configfs_symlink+0x1a4/0x48c vfs_symlink+0x104/0x184 do_symlinkat+0x80/0xd4 __arm64_sys_symlinkat+0x1c/0x24 el0_svc_common.constprop.3+0xb8/0x170 el0_svc_handler+0x70/0x88 el0_svc+0x8/0x640 Code: d2800581 b9403ab9 f9404ebb 8b394f60 (f9400400) ---[ end trace a438e3c5a24f9df0 ]---
{
"binaries": [
{
"binary_name": "linux-buildinfo-5.15.0-1073-intel-iot-realtime",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-cloud-tools-5.15.0-1073-intel-iot-realtime",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-headers-5.15.0-1073-intel-iot-realtime",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-image-unsigned-5.15.0-1073-intel-iot-realtime",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-intel-iot-realtime-cloud-tools-5.15.0-1073",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-intel-iot-realtime-cloud-tools-common",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-intel-iot-realtime-headers-5.15.0-1073",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-intel-iot-realtime-tools-5.15.0-1073",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-intel-iot-realtime-tools-common",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-intel-iot-realtime-tools-host",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-modules-5.15.0-1073-intel-iot-realtime",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-modules-extra-5.15.0-1073-intel-iot-realtime",
"binary_version": "5.15.0-1073.75"
},
{
"binary_name": "linux-tools-5.15.0-1073-intel-iot-realtime",
"binary_version": "5.15.0-1073.75"
}
]
}{
"binaries": [
{
"binary_name": "linux-buildinfo-5.15.0-1032-realtime",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-cloud-tools-5.15.0-1032-realtime",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-headers-5.15.0-1032-realtime",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-image-unsigned-5.15.0-1032-realtime",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-modules-5.15.0-1032-realtime",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-modules-extra-5.15.0-1032-realtime",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-realtime-cloud-tools-5.15.0-1032",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-realtime-cloud-tools-common",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-realtime-headers-5.15.0-1032",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-realtime-tools-5.15.0-1032",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-realtime-tools-common",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-realtime-tools-host",
"binary_version": "5.15.0-1032.35"
},
{
"binary_name": "linux-tools-5.15.0-1032-realtime",
"binary_version": "5.15.0-1032.35"
}
]
}{
"binaries": [
{
"binary_name": "linux-buildinfo-6.8.0-2019-raspi-realtime",
"binary_version": "6.8.0-2019.20"
},
{
"binary_name": "linux-headers-6.8.0-2019-raspi-realtime",
"binary_version": "6.8.0-2019.20"
},
{
"binary_name": "linux-image-6.8.0-2019-raspi-realtime",
"binary_version": "6.8.0-2019.20"
},
{
"binary_name": "linux-modules-6.8.0-2019-raspi-realtime",
"binary_version": "6.8.0-2019.20"
},
{
"binary_name": "linux-raspi-realtime-headers-6.8.0-2019",
"binary_version": "6.8.0-2019.20"
},
{
"binary_name": "linux-raspi-realtime-tools-6.8.0-2019",
"binary_version": "6.8.0-2019.20"
},
{
"binary_name": "linux-tools-6.8.0-2019-raspi-realtime",
"binary_version": "6.8.0-2019.20"
}
]
}{
"binaries": [
{
"binary_name": "linux-aws-fips-headers-5.4.0-1161",
"binary_version": "5.4.0-1161.172+fips1"
},
{
"binary_name": "linux-aws-fips-tools-5.4.0-1161",
"binary_version": "5.4.0-1161.172+fips1"
},
{
"binary_name": "linux-buildinfo-5.4.0-1161-aws-fips",
"binary_version": "5.4.0-1161.172+fips1"
},
{
"binary_name": "linux-headers-5.4.0-1161-aws-fips",
"binary_version": "5.4.0-1161.172+fips1"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1161-aws-fips",
"binary_version": "5.4.0-1161.172+fips1"
},
{
"binary_name": "linux-image-unsigned-hmac-5.4.0-1161-aws-fips",
"binary_version": "5.4.0-1161.172+fips1"
},
{
"binary_name": "linux-modules-5.4.0-1161-aws-fips",
"binary_version": "5.4.0-1161.172+fips1"
},
{
"binary_name": "linux-modules-extra-5.4.0-1161-aws-fips",
"binary_version": "5.4.0-1161.172+fips1"
},
{
"binary_name": "linux-tools-5.4.0-1161-aws-fips",
"binary_version": "5.4.0-1161.172+fips1"
}
]
}{
"binaries": [
{
"binary_name": "linux-azure-fips-cloud-tools-5.4.0-1168",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-azure-fips-headers-5.4.0-1168",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-azure-fips-tools-5.4.0-1168",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-buildinfo-5.4.0-1168-azure-fips",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-cloud-tools-5.4.0-1168-azure-fips",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-headers-5.4.0-1168-azure-fips",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1168-azure-fips",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-image-unsigned-hmac-5.4.0-1168-azure-fips",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-modules-5.4.0-1168-azure-fips",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-modules-extra-5.4.0-1168-azure-fips",
"binary_version": "5.4.0-1168.174+fips1"
},
{
"binary_name": "linux-tools-5.4.0-1168-azure-fips",
"binary_version": "5.4.0-1168.174+fips1"
}
]
}{
"binaries": [
{
"binary_name": "linux-buildinfo-5.4.0-1165-gcp-fips",
"binary_version": "5.4.0-1165.174+fips1"
},
{
"binary_name": "linux-gcp-fips-headers-5.4.0-1165",
"binary_version": "5.4.0-1165.174+fips1"
},
{
"binary_name": "linux-gcp-fips-tools-5.4.0-1165",
"binary_version": "5.4.0-1165.174+fips1"
},
{
"binary_name": "linux-headers-5.4.0-1165-gcp-fips",
"binary_version": "5.4.0-1165.174+fips1"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1165-gcp-fips",
"binary_version": "5.4.0-1165.174+fips1"
},
{
"binary_name": "linux-image-unsigned-hmac-5.4.0-1165-gcp-fips",
"binary_version": "5.4.0-1165.174+fips1"
},
{
"binary_name": "linux-modules-5.4.0-1165-gcp-fips",
"binary_version": "5.4.0-1165.174+fips1"
},
{
"binary_name": "linux-modules-extra-5.4.0-1165-gcp-fips",
"binary_version": "5.4.0-1165.174+fips1"
},
{
"binary_name": "linux-tools-5.4.0-1165-gcp-fips",
"binary_version": "5.4.0-1165.174+fips1"
}
]
}{
"binaries": [
{
"binary_name": "linux-aws-fips-headers-5.4.0-1021",
"binary_version": "5.4.0-1021.21+fips2"
},
{
"binary_name": "linux-aws-fips-tools-5.4.0-1021",
"binary_version": "5.4.0-1021.21+fips2"
},
{
"binary_name": "linux-buildinfo-5.4.0-1021-aws-fips",
"binary_version": "5.4.0-1021.21+fips2"
},
{
"binary_name": "linux-headers-5.4.0-1021-aws-fips",
"binary_version": "5.4.0-1021.21+fips2"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1021-aws-fips",
"binary_version": "5.4.0-1021.21+fips2"
},
{
"binary_name": "linux-image-unsigned-hmac-5.4.0-1021-aws-fips",
"binary_version": "5.4.0-1021.21+fips2"
},
{
"binary_name": "linux-modules-5.4.0-1021-aws-fips",
"binary_version": "5.4.0-1021.21+fips2"
},
{
"binary_name": "linux-modules-extra-5.4.0-1021-aws-fips",
"binary_version": "5.4.0-1021.21+fips2"
},
{
"binary_name": "linux-tools-5.4.0-1021-aws-fips",
"binary_version": "5.4.0-1021.21+fips2"
}
]
}{
"binaries": [
{
"binary_name": "linux-azure-fips-cloud-tools-5.4.0-1022",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-azure-fips-headers-5.4.0-1022",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-azure-fips-tools-5.4.0-1022",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-buildinfo-5.4.0-1022-azure-fips",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-cloud-tools-5.4.0-1022-azure-fips",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-headers-5.4.0-1022-azure-fips",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1022-azure-fips",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-image-unsigned-hmac-5.4.0-1022-azure-fips",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-modules-5.4.0-1022-azure-fips",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-modules-extra-5.4.0-1022-azure-fips",
"binary_version": "5.4.0-1022.22+fips1"
},
{
"binary_name": "linux-tools-5.4.0-1022-azure-fips",
"binary_version": "5.4.0-1022.22+fips1"
}
]
}{
"binaries": [
{
"binary_name": "linux-buildinfo-5.4.0-1021-gcp-fips",
"binary_version": "5.4.0-1021.21+fips1"
},
{
"binary_name": "linux-gcp-fips-headers-5.4.0-1021",
"binary_version": "5.4.0-1021.21+fips1"
},
{
"binary_name": "linux-gcp-fips-tools-5.4.0-1021",
"binary_version": "5.4.0-1021.21+fips1"
},
{
"binary_name": "linux-headers-5.4.0-1021-gcp-fips",
"binary_version": "5.4.0-1021.21+fips1"
},
{
"binary_name": "linux-image-unsigned-5.4.0-1021-gcp-fips",
"binary_version": "5.4.0-1021.21+fips1"
},
{
"binary_name": "linux-image-unsigned-hmac-5.4.0-1021-gcp-fips",
"binary_version": "5.4.0-1021.21+fips1"
},
{
"binary_name": "linux-modules-5.4.0-1021-gcp-fips",
"binary_version": "5.4.0-1021.21+fips1"
},
{
"binary_name": "linux-modules-extra-5.4.0-1021-gcp-fips",
"binary_version": "5.4.0-1021.21+fips1"
},
{
"binary_name": "linux-tools-5.4.0-1021-gcp-fips",
"binary_version": "5.4.0-1021.21+fips1"
}
]
}