USN-4627-1: Linux kernel vulnerability
11 November 2020
The system could be made to expose sensitive information.
Releases
Packages
- linux - Linux kernel
- linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke-4.15 - Linux kernel for Google Container Engine (GKE) systems
- linux-gke-5.3 - Linux kernel for Google Container Engine (GKE) systems
- linux-hwe - Linux hardware enablement (HWE) kernel
- linux-hwe-5.4 - Linux hardware enablement (HWE) kernel
- linux-lts-trusty - Linux hardware enablement kernel from Trusty for Precise ESM
- linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty
- linux-oem - Linux kernel for OEM systems
- linux-oem-osp1 - Linux kernel for OEM systems
- linux-oracle - Linux kernel for Oracle Cloud systems
- linux-oracle-5.4 - Linux kernel for Oracle Cloud systems
Details
Moritz Lipp, Michael Schwarz, Andreas Kogler, David Oswald, Catherine
Easdon, Claudio Canella, and Daniel Gruss discovered that the Intel Running
Average Power Limit (RAPL) driver in the Linux kernel did not properly
restrict access to power data. A local attacker could possibly use this to
expose sensitive information.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04
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linux-image-5.4.0-1029-gcp
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5.4.0-1029.31
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linux-image-5.4.0-1029-oracle
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5.4.0-1029.31
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linux-image-5.4.0-53-generic
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5.4.0-53.59
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linux-image-5.4.0-53-generic-lpae
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5.4.0-53.59
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linux-image-5.4.0-53-lowlatency
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5.4.0-53.59
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linux-image-gcp
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5.4.0.1029.37
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linux-image-generic
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5.4.0.53.56
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linux-image-generic-hwe-20.04
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5.4.0.53.56
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linux-image-generic-lpae
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5.4.0.53.56
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linux-image-generic-lpae-hwe-20.04
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5.4.0.53.56
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linux-image-gke
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5.4.0.1029.37
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linux-image-lowlatency
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5.4.0.53.56
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linux-image-lowlatency-hwe-20.04
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5.4.0.53.56
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linux-image-oem
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5.4.0.53.56
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linux-image-oem-osp1
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5.4.0.53.56
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linux-image-oracle
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5.4.0.1029.26
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linux-image-virtual
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5.4.0.53.56
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linux-image-virtual-hwe-20.04
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5.4.0.53.56
Ubuntu 18.04
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linux-image-4.15.0-1058-oracle
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4.15.0-1058.64
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linux-image-4.15.0-1073-gke
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4.15.0-1073.78
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linux-image-4.15.0-1087-gcp
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4.15.0-1087.100
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linux-image-4.15.0-1101-oem
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4.15.0-1101.112
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linux-image-4.15.0-123-generic
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4.15.0-123.126
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linux-image-4.15.0-123-generic-lpae
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4.15.0-123.126
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linux-image-4.15.0-123-lowlatency
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4.15.0-123.126
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linux-image-5.0.0-1071-oem-osp1
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5.0.0-1071.77
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linux-image-5.3.0-1039-gke
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5.3.0-1039.42
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linux-image-5.3.0-69-generic
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5.3.0-69.65
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linux-image-5.3.0-69-lowlatency
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5.3.0-69.65
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linux-image-5.4.0-1029-gcp
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5.4.0-1029.31~18.04.1
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linux-image-5.4.0-1029-oracle
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5.4.0-1029.31~18.04.1
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linux-image-5.4.0-53-generic
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5.4.0-53.59~18.04.1
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linux-image-5.4.0-53-generic-lpae
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5.4.0-53.59~18.04.1
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linux-image-5.4.0-53-lowlatency
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5.4.0-53.59~18.04.1
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linux-image-gcp
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5.4.0.1029.17
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linux-image-gcp-edge
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5.4.0.1029.17
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linux-image-gcp-lts-18.04
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4.15.0.1087.105
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linux-image-generic
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4.15.0.123.110
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linux-image-generic-hwe-18.04
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5.4.0.53.59~18.04.47
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linux-image-generic-lpae
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4.15.0.123.110
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linux-image-generic-lpae-hwe-18.04
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5.4.0.53.59~18.04.47
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linux-image-gke
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4.15.0.1073.77
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linux-image-gke-4.15
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4.15.0.1073.77
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linux-image-gke-5.3
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5.3.0.1039.22
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linux-image-gkeop-5.3
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5.3.0.69.126
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linux-image-lowlatency
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4.15.0.123.110
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linux-image-lowlatency-hwe-18.04
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5.4.0.53.59~18.04.47
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linux-image-oem
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4.15.0.1101.105
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linux-image-oem-osp1
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5.0.0.1071.69
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linux-image-oracle
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5.4.0.1029.13
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linux-image-oracle-edge
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5.4.0.1029.13
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linux-image-oracle-lts-18.04
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4.15.0.1058.68
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linux-image-snapdragon-hwe-18.04
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5.4.0.53.59~18.04.47
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linux-image-virtual
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4.15.0.123.110
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linux-image-virtual-hwe-18.04
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5.4.0.53.59~18.04.47
Ubuntu 16.04
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linux-image-4.15.0-1058-oracle
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4.15.0-1058.64~16.04.1
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linux-image-4.15.0-1087-gcp
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4.15.0-1087.100~16.04.1
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linux-image-4.15.0-123-generic
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4.15.0-123.126~16.04.1
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linux-image-4.15.0-123-generic-lpae
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4.15.0-123.126~16.04.1
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linux-image-4.15.0-123-lowlatency
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4.15.0-123.126~16.04.1
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linux-image-4.4.0-194-generic
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4.4.0-194.226
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linux-image-4.4.0-194-generic-lpae
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4.4.0-194.226
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linux-image-4.4.0-194-lowlatency
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4.4.0-194.226
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linux-image-4.4.0-194-powerpc-e500mc
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4.4.0-194.226
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linux-image-4.4.0-194-powerpc-smp
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4.4.0-194.226
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linux-image-4.4.0-194-powerpc64-emb
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4.4.0-194.226
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linux-image-4.4.0-194-powerpc64-smp
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4.4.0-194.226
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linux-image-gcp
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4.15.0.1087.88
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linux-image-generic
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4.4.0.194.200
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linux-image-generic-hwe-16.04
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4.15.0.123.123
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linux-image-generic-lpae
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4.4.0.194.200
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linux-image-generic-lpae-hwe-16.04
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4.15.0.123.123
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linux-image-gke
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4.15.0.1087.88
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linux-image-lowlatency
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4.4.0.194.200
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linux-image-lowlatency-hwe-16.04
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4.15.0.123.123
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linux-image-oem
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4.15.0.123.123
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linux-image-oracle
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4.15.0.1058.47
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linux-image-powerpc-e500mc
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4.4.0.194.200
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linux-image-powerpc-smp
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4.4.0.194.200
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linux-image-powerpc64-emb
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4.4.0.194.200
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linux-image-powerpc64-smp
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4.4.0.194.200
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linux-image-virtual
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4.4.0.194.200
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linux-image-virtual-hwe-16.04
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4.15.0.123.123
Ubuntu 14.04
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linux-image-3.13.0-183-generic
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3.13.0-183.234
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linux-image-3.13.0-183-generic-lpae
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3.13.0-183.234
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linux-image-3.13.0-183-lowlatency
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3.13.0-183.234
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linux-image-3.13.0-183-powerpc-e500
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3.13.0-183.234
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linux-image-3.13.0-183-powerpc-e500mc
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3.13.0-183.234
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linux-image-3.13.0-183-powerpc-smp
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3.13.0-183.234
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linux-image-3.13.0-183-powerpc64-emb
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3.13.0-183.234
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linux-image-3.13.0-183-powerpc64-smp
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3.13.0-183.234
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linux-image-4.4.0-194-generic
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4.4.0-194.226~14.04.1
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linux-image-4.4.0-194-generic-lpae
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4.4.0-194.226~14.04.1
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linux-image-4.4.0-194-lowlatency
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4.4.0-194.226~14.04.1
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linux-image-4.4.0-194-powerpc-e500mc
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4.4.0-194.226~14.04.1
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linux-image-4.4.0-194-powerpc-smp
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4.4.0-194.226~14.04.1
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linux-image-4.4.0-194-powerpc64-emb
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4.4.0-194.226~14.04.1
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linux-image-4.4.0-194-powerpc64-smp
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4.4.0-194.226~14.04.1
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linux-image-generic
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3.13.0.183.192
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linux-image-generic-lpae
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3.13.0.183.192
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linux-image-generic-lpae-lts-xenial
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4.4.0.194.170
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linux-image-generic-lts-xenial
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4.4.0.194.170
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linux-image-generic-pae
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3.13.0.183.192
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linux-image-highbank
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3.13.0.183.192
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linux-image-lowlatency
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3.13.0.183.192
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linux-image-lowlatency-lts-xenial
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4.4.0.194.170
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linux-image-lowlatency-pae
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3.13.0.183.192
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linux-image-omap
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3.13.0.183.192
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linux-image-powerpc-e500
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3.13.0.183.192
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linux-image-powerpc-e500mc
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3.13.0.183.192
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linux-image-powerpc-e500mc-lts-xenial
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4.4.0.194.170
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linux-image-powerpc-smp
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3.13.0.183.192
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linux-image-powerpc-smp-lts-xenial
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4.4.0.194.170
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linux-image-powerpc64-emb
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3.13.0.183.192
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linux-image-powerpc64-emb-lts-xenial
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4.4.0.194.170
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linux-image-powerpc64-smp
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3.13.0.183.192
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linux-image-powerpc64-smp-lts-xenial
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4.4.0.194.170
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linux-image-server
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3.13.0.183.192
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linux-image-virtual
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3.13.0.183.192
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linux-image-virtual-lts-xenial
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4.4.0.194.170
Ubuntu 12.04
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linux-image-3.13.0-183-generic
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3.13.0-183.234~12.04.1
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linux-image-3.13.0-183-generic-lpae
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3.13.0-183.234~12.04.1
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linux-image-3.13.0-183-lowlatency
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3.13.0-183.234~12.04.1
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linux-image-generic-lpae-lts-trusty
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3.13.0.183.169
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linux-image-generic-lts-trusty
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3.13.0.183.169
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.
References
Related notices
- USN-4626-1: linux-image-5.8.0-28-lowlatency, linux-image-virtual-hwe-20.04-edge, linux-azure, linux-image-aws, linux-aws, linux-image-virtual-hwe-20.04, linux-image-generic-lpae-hwe-20.04, linux-image-5.8.0-1011-gcp, linux-image-generic-64k, linux-image-virtual, linux-image-5.8.0-1007-raspi, linux-image-generic-hwe-20.04, linux-gcp, linux-image-lowlatency-hwe-20.04, linux-image-generic-64k-hwe-20.04-edge, linux-image-generic-hwe-20.04-edge, linux-image-generic-64k-hwe-20.04, linux-image-generic-lpae-hwe-20.04-edge, linux-image-gke, linux-image-5.8.0-1012-azure, linux-image-5.8.0-1010-oracle, linux-image-lowlatency-hwe-20.04-edge, linux-image-5.8.0-28-generic-64k, linux-image-gcp, linux-image-raspi-nolpae, linux-image-generic-lpae, linux, linux-kvm, linux-image-generic, linux-image-raspi, linux-image-oem-20.04, linux-image-kvm, linux-oracle, linux-image-5.8.0-1013-aws, linux-image-5.8.0-28-generic, linux-image-5.8.0-28-generic-lpae, linux-image-azure, linux-image-5.8.0-1009-kvm, linux-image-lowlatency, linux-raspi, linux-image-oracle, linux-image-5.8.0-1007-raspi-nolpae