USN-5014-1: Linux kernel vulnerability
Published Jul 20, 2021
·Updated
It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to signed integer conversion error. A local attacker could use this to cause a denial of service (system crash) or execute arbitrary code.
Affected Software
140 affected componentsFixes available
All of the following
ubuntu/linux-image-5.11.0-1012-azure<5.11.0-1012.13
5.11.0-1012.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1012-kvm<5.11.0-1012.13
5.11.0-1012.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1013-oracle<5.11.0-1013.14
5.11.0-1013.14
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1014-aws<5.11.0-1014.15
5.11.0-1014.15
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1014-gcp<5.11.0-1014.16
5.11.0-1014.16
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1015-raspi<5.11.0-1015.16
5.11.0-1015.16
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-1015-raspi-nolpae<5.11.0-1015.16
5.11.0-1015.16
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-25-generic<5.11.0-25.27
5.11.0-25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-25-generic-64k<5.11.0-25.27
5.11.0-25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-25-generic-lpae<5.11.0-25.27
5.11.0-25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.11.0-25-lowlatency<5.11.0-25.27
5.11.0-25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-aws<5.11.0.1014.15
5.11.0.1014.15
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-azure<5.11.0.1012.13
5.11.0.1012.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-gcp<5.11.0.1014.14
5.11.0.1014.14
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic-64k<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-generic-lpae<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-gke<5.11.0.1014.14
5.11.0.1014.14
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-kvm<5.11.0.1012.13
5.11.0.1012.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-lowlatency<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-oem-20.04<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-oracle<5.11.0.1013.14
5.11.0.1013.14
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-raspi<5.11.0.1015.13
5.11.0.1015.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-raspi-nolpae<5.11.0.1015.13
5.11.0.1015.13
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-virtual<5.11.0.25.27
5.11.0.25.27
Ubuntu Ubuntu=21.04
All of the following
ubuntu/linux-image-5.3.0-1042-raspi2<5.3.0-1042.44
5.3.0-1042.44
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-1045-gke<5.3.0-1045.48
5.3.0-1045.48
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-76-generic<5.3.0-76.72
5.3.0-76.72
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-5.3.0-76-lowlatency<5.3.0-76.72
5.3.0-76.72
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gke-5.3<5.3.0.1045.28
5.3.0.1045.28
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-gkeop-5.3<5.3.0.76.133
5.3.0.76.133
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-raspi2-hwe-18.04<5.3.0.1042.31
5.3.0.1042.31
Ubuntu Ubuntu=18.04
All of the following
ubuntu/linux-image-4.4.0-1095-kvm<4.4.0-1095.104
4.4.0-1095.104
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.4.0-1130-aws<4.4.0-1130.144
4.4.0-1130.144
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.4.0-212-generic<4.4.0-212.244
4.4.0-212.244
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-4.4.0-212-lowlatency<4.4.0-212.244
4.4.0-212.244
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-aws<4.4.0.1130.135
4.4.0.1130.135
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-generic<4.4.0.212.219
4.4.0.212.219
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-kvm<4.4.0.1095.93
4.4.0.1095.93
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-lowlatency<4.4.0.212.219
4.4.0.212.219
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-virtual<4.4.0.212.219
4.4.0.212.219
Ubuntu Ubuntu=16.04
All of the following
ubuntu/linux-image-3.13.0-186-generic<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-generic-lpae<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-lowlatency<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc-e500<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc-e500mc<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc-smp<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc64-emb<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-3.13.0-186-powerpc64-smp<3.13.0-186.237
3.13.0-186.237
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-4.4.0-1094-aws<4.4.0-1094.99
4.4.0-1094.99
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-4.4.0-212-generic<4.4.0-212.244~14.04.1
4.4.0-212.244~14.04.1
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-4.4.0-212-lowlatency<4.4.0-212.244~14.04.1
4.4.0-212.244~14.04.1
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-aws<4.4.0.1094.92
4.4.0.1094.92
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-generic<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-generic-lpae<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-generic-lts-xenial<4.4.0.212.185
4.4.0.212.185
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-generic-pae<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-highbank<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-lowlatency<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-lowlatency-lts-xenial<4.4.0.212.185
4.4.0.212.185
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-lowlatency-pae<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-omap<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc-e500<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc-e500mc<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc-smp<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc64-emb<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-powerpc64-smp<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-server<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-virtual<3.13.0.186.195
3.13.0.186.195
Ubuntu Ubuntu=14.04
All of the following
ubuntu/linux-image-virtual-lts-xenial<4.4.0.212.185
4.4.0.212.185
Ubuntu Ubuntu=14.04
Event History
Jul 20, 2021
Advisory Published
via Ubuntu·12:00 AM
Frequently Asked Questions
1
What is the severity of USN-5014-1?
The severity of USN-5014-1 is considered high due to the potential for denial of service and arbitrary code execution.
2
How do I fix USN-5014-1?
To fix USN-5014-1, upgrade to the recommended kernel versions specified in the advisory, such as linux-image-5.11.0-1012.13.
3
Who is affected by USN-5014-1?
USN-5014-1 affects local users on Ubuntu 21.04 running specific kernel versions that have the vulnerability.
4
What are the potential impacts of USN-5014-1?
The potential impacts of USN-5014-1 include system crashes and the execution of arbitrary code by local attackers.
5
Is there a public exploit for USN-5014-1?
As of now, there is no publicly known exploit for USN-5014-1, but the vulnerability's existence means it could be targeted.