USN-4694-1: Linux kernel vulnerability
14 January 2021
The system could allow unintended access to data in some environments.
Releases
Packages
- linux - Linux kernel
- linux-hwe - Linux hardware enablement (HWE) kernel
- linux-hwe-5.4 - Linux hardware enablement (HWE) kernel
- linux-hwe-5.8 - Linux hardware enablement (HWE) kernel
- linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty
Details
It was discovered that the LIO SCSI target implementation in the Linux
kernel performed insufficient identifier checking in certain XCOPY
requests. An attacker with access to at least one LUN in a multiple
backstore environment could use this to expose sensitive information or
modify data.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.10
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linux-image-5.8.0-38-generic
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5.8.0-38.43
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linux-image-5.8.0-38-generic-64k
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5.8.0-38.43
-
linux-image-5.8.0-38-generic-lpae
-
5.8.0-38.43
-
linux-image-5.8.0-38-lowlatency
-
5.8.0-38.43
-
linux-image-generic
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5.8.0.38.42
-
linux-image-generic-64k
-
5.8.0.38.42
-
linux-image-generic-lpae
-
5.8.0.38.42
-
linux-image-lowlatency
-
5.8.0.38.42
-
linux-image-virtual
-
5.8.0.38.42
Ubuntu 20.04
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linux-image-5.4.0-62-generic
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5.4.0-62.70
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linux-image-5.4.0-62-generic-lpae
-
5.4.0-62.70
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linux-image-5.4.0-62-lowlatency
-
5.4.0-62.70
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linux-image-5.8.0-38-generic
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5.8.0-38.43~20.04.1
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linux-image-5.8.0-38-generic-lpae
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5.8.0-38.43~20.04.1
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linux-image-5.8.0-38-lowlatency
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5.8.0-38.43~20.04.1
-
linux-image-generic
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5.4.0.62.65
-
linux-image-generic-hwe-20.04
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5.8.0.38.43~20.04.23
-
linux-image-generic-lpae
-
5.4.0.62.65
-
linux-image-generic-lpae-hwe-20.04
-
5.8.0.38.43~20.04.23
-
linux-image-lowlatency
-
5.4.0.62.65
-
linux-image-lowlatency-hwe-20.04
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5.8.0.38.43~20.04.23
-
linux-image-oem
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5.4.0.62.65
-
linux-image-oem-osp1
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5.4.0.62.65
-
linux-image-virtual
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5.4.0.62.65
-
linux-image-virtual-hwe-20.04
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5.8.0.38.43~20.04.23
Ubuntu 18.04
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linux-image-4.15.0-132-generic
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4.15.0-132.136
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linux-image-4.15.0-132-generic-lpae
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4.15.0-132.136
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linux-image-4.15.0-132-lowlatency
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4.15.0-132.136
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linux-image-5.4.0-62-generic
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5.4.0-62.70~18.04.1
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linux-image-5.4.0-62-generic-lpae
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5.4.0-62.70~18.04.1
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linux-image-5.4.0-62-lowlatency
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5.4.0-62.70~18.04.1
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linux-image-generic
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4.15.0.132.119
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linux-image-generic-hwe-18.04
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5.4.0.62.70~18.04.57
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linux-image-generic-lpae
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4.15.0.132.119
-
linux-image-generic-lpae-hwe-18.04
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5.4.0.62.70~18.04.57
-
linux-image-lowlatency
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4.15.0.132.119
-
linux-image-lowlatency-hwe-18.04
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5.4.0.62.70~18.04.57
-
linux-image-oem
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5.4.0.62.70~18.04.57
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linux-image-oem-osp1
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5.4.0.62.70~18.04.57
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linux-image-snapdragon-hwe-18.04
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5.4.0.62.70~18.04.57
-
linux-image-virtual
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4.15.0.132.119
-
linux-image-virtual-hwe-18.04
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5.4.0.62.70~18.04.57
Ubuntu 16.04
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linux-image-4.15.0-132-generic
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4.15.0-132.136~16.04.1
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linux-image-4.15.0-132-generic-lpae
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4.15.0-132.136~16.04.1
-
linux-image-4.15.0-132-lowlatency
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4.15.0-132.136~16.04.1
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linux-image-4.4.0-200-generic
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4.4.0-200.232
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linux-image-4.4.0-200-generic-lpae
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4.4.0-200.232
-
linux-image-4.4.0-200-lowlatency
-
4.4.0-200.232
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linux-image-4.4.0-200-powerpc-e500mc
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4.4.0-200.232
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linux-image-4.4.0-200-powerpc-smp
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4.4.0-200.232
-
linux-image-4.4.0-200-powerpc64-emb
-
4.4.0-200.232
-
linux-image-4.4.0-200-powerpc64-smp
-
4.4.0-200.232
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linux-image-generic
-
4.4.0.200.206
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linux-image-generic-hwe-16.04
-
4.15.0.132.130
-
linux-image-generic-lpae
-
4.4.0.200.206
-
linux-image-generic-lpae-hwe-16.04
-
4.15.0.132.130
-
linux-image-lowlatency
-
4.4.0.200.206
-
linux-image-lowlatency-hwe-16.04
-
4.15.0.132.130
-
linux-image-oem
-
4.15.0.132.130
-
linux-image-powerpc-e500mc
-
4.4.0.200.206
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linux-image-powerpc-smp
-
4.4.0.200.206
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linux-image-powerpc64-emb
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4.4.0.200.206
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linux-image-powerpc64-smp
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4.4.0.200.206
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linux-image-virtual
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4.4.0.200.206
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linux-image-virtual-hwe-16.04
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4.15.0.132.130
Ubuntu 14.04
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linux-image-4.4.0-200-generic
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4.4.0-200.232~14.04.1
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linux-image-4.4.0-200-generic-lpae
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4.4.0-200.232~14.04.1
-
linux-image-4.4.0-200-lowlatency
-
4.4.0-200.232~14.04.1
-
linux-image-4.4.0-200-powerpc-e500mc
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4.4.0-200.232~14.04.1
-
linux-image-4.4.0-200-powerpc-smp
-
4.4.0-200.232~14.04.1
-
linux-image-4.4.0-200-powerpc64-emb
-
4.4.0-200.232~14.04.1
-
linux-image-4.4.0-200-powerpc64-smp
-
4.4.0-200.232~14.04.1
-
linux-image-generic-lpae-lts-xenial
-
4.4.0.200.175
-
linux-image-generic-lts-xenial
-
4.4.0.200.175
-
linux-image-lowlatency-lts-xenial
-
4.4.0.200.175
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linux-image-powerpc-e500mc-lts-xenial
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4.4.0.200.175
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linux-image-powerpc-smp-lts-xenial
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4.4.0.200.175
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linux-image-powerpc64-emb-lts-xenial
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4.4.0.200.175
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linux-image-powerpc64-smp-lts-xenial
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4.4.0.200.175
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linux-image-virtual-lts-xenial
-
4.4.0.200.175
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
- {'id': 'USN-4709-1', 'packages': 'linux-aws, linux-image-4.4.0-1149-snapdragon, linux-image-snapdragon, linux-image-4.4.0-1121-aws, linux-image-4.4.0-1087-kvm, linux-snapdragon, linux-image-aws, linux-raspi2, linux-image-4.4.0-1085-aws, linux-kvm, linux-image-raspi2, linux-image-4.4.0-1145-raspi2, linux-image-kvm'}
- {'id': 'USN-4711-1', 'packages': 'linux-image-oracle-lts-18.04, linux-image-gcp, linux-image-4.15.0-1084-kvm, linux-image-gcp-lts-18.04, linux-snapdragon, linux-gcp-4.15, linux-image-gke, linux-azure-4.15, linux-image-4.15.0-1095-snapdragon, linux-image-4.15.0-1093-aws, linux-image-azure, linux-kvm, linux-image-azure-edge, linux-oracle, linux-image-4.15.0-1078-raspi2, linux-image-aws-hwe, linux-image-4.15.0-1106-azure, linux-azure, linux-image-4.15.0-1078-gke, linux-image-aws-lts-18.04, linux-image-snapdragon, linux-aws-hwe, linux-image-raspi2, linux-image-azure-lts-18.04, linux-image-kvm, linux-gcp, linux-gke-4.15, linux-image-4.15.0-1092-gcp, linux-aws, linux-image-4.15.0-1064-oracle, linux-image-oracle, linux-raspi2, linux-image-gke-4.15'}
- {'id': 'USN-4713-1', 'packages': 'linux-image-5.8.0-1020-gcp, linux-image-gcp, linux-image-gke, linux-aws-5.4, linux-image-5.8.0-1021-aws, linux-image-5.8.0-1020-azure, linux-image-raspi2-hwe-18.04, linux-image-5.4.0-1028-raspi, linux-image-5.4.0-1037-aws, linux-image-raspi-hwe-18.04-edge, linux-image-azure, linux-kvm, linux-image-5.8.0-1013-raspi-nolpae, linux-image-azure-edge, linux-oracle, linux-image-5.8.0-1016-kvm, linux-image-raspi-nolpae, linux-raspi, linux-azure, linux-image-5.4.0-1039-azure, linux-image-5.8.0-1018-oracle, linux-image-gke-5.4, linux-gkeop-5.4, linux-image-aws-edge, linux-raspi-5.4, linux-image-aws, linux-image-5.4.0-1032-kvm, linux-image-raspi, linux-image-raspi2, linux-image-5.4.0-1035-gke, linux-image-kvm, linux-gcp, linux-image-raspi-hwe-18.04, linux-aws, linux-oracle-5.4, linux-gke-5.4, linux-azure-5.4, linux-image-gkeop-5.4, linux-image-raspi2-hwe-18.04-edge, linux-image-oracle, linux-image-5.4.0-1036-gcp, linux-image-5.4.0-1009-gkeop, linux-image-gcp-edge, linux-image-5.4.0-1037-oracle, linux-image-5.8.0-1013-raspi, linux-gcp-5.4, linux-image-oracle-edge'}
- {'id': 'USN-4713-2', 'packages': 'linux-image-3.13.0-184-powerpc-smp, linux-image-generic-lpae-lts-trusty, linux-image-gke-5.3, linux-image-generic-lts-trusty, linux-image-generic-lts-saucy, linux-image-raspi2-hwe-18.04, linux-image-5.3.0-1037-raspi2, linux, linux-image-lowlatency, linux-image-generic-lts-quantal, linux-image-powerpc-e500mc, linux-image-3.13.0-184-powerpc64-emb, linux-image-5.0.0-1051-gke, linux-image-3.13.0-184-generic-lpae, linux-image-generic, linux-image-5.3.0-70-generic, linux-image-powerpc64-emb, linux-image-generic-lpae, linux-image-5.3.0-1040-gke, linux-gke-5.0, linux-image-3.13.0-184-powerpc-e500mc, linux-image-3.13.0-184-powerpc-e500, linux-image-generic-lpae-lts-saucy, linux-gke-5.3, linux-image-3.13.0-184-lowlatency, linux-raspi2-5.3, linux-image-3.13.0-184-powerpc64-smp, linux-image-gkeop-5.3, linux-image-omap, linux-image-gke-5.0, linux-image-5.3.0-70-lowlatency, linux-image-powerpc-e500, linux-image-powerpc64-smp, linux-image-lowlatency-pae, linux-image-3.13.0-184-generic, linux-image-generic-pae, linux-image-generic-lts-raring, linux-image-server, linux-image-powerpc-smp, linux-hwe, linux-image-highbank, linux-image-virtual'}
- {'id': 'USN-4753-1', 'packages': 'linux-image-oem-20.04-edge, linux-image-oem-20.04b, linux-oem-5.10, linux-image-5.10.0-1014-oem'}
- {'id': 'USN-4901-1', 'packages': 'linux-image-3.13.0-185-generic, linux-lts-trusty, linux-image-generic-lts-trusty'}
- {'id': 'LSN-0074-1', 'packages': 'gcp, generic-5.4, gke, generic-4.4, lowlatency-5.4, gkeop, azure-fips, aws-fips, aws, lowlatency-4.15, azure, lowlatency-4.4, oem, generic-4.15, gkeop-5.4, fips'}