CVE-2019-15031
Publication date 9 September 2019
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
In the Linux kernel through 5.2.14 on the powerpc platform, a local user can read vector registers of other users' processes via an interrupt. To exploit the venerability, a local user starts a transaction (via the hardware transactional memory instruction tbegin) and then accesses vector registers. At some point, the vector registers will be corrupted with the values from a different local Linux process, because MSR_TM_ACTIVE is misused in arch/powerpc/kernel/process.c.
From the Ubuntu Security Team
It was discovered that the Linux kernel on PowerPC architectures did not properly handle exceptions on interrupts in some situations. A local attacker could use this to expose sensitive information.
Status
Package | Ubuntu Release | Status |
---|---|---|
linux | ||
18.04 LTS bionic |
Fixed 4.15.0-64.73
|
|
16.04 LTS xenial |
Not affected
|
|
14.04 LTS trusty |
Not affected
|
|
linux-aws | ||
18.04 LTS bionic |
Fixed 4.15.0-1050.52
|
|
16.04 LTS xenial |
Not affected
|
|
14.04 LTS trusty |
Not affected
|
|
linux-aws-5.0 | ||
18.04 LTS bionic |
Not affected
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-aws-hwe | ||
18.04 LTS bionic | Not in release | |
16.04 LTS xenial |
Fixed 4.15.0-1050.52~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-azure | ||
18.04 LTS bionic |
Fixed 5.0.0-1020.21~18.04.1
|
|
16.04 LTS xenial |
Fixed 4.15.0-1059.64
|
|
14.04 LTS trusty |
Fixed 4.15.0-1059.64~14.04.1
|
|
linux-azure-5.3 | ||
18.04 LTS bionic |
Not affected
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-azure-edge | ||
18.04 LTS bionic |
Fixed 5.0.0-1020.21~18.04.1
|
|
16.04 LTS xenial |
Fixed 4.15.0-1059.64
|
|
14.04 LTS trusty | Not in release | |
linux-gcp | ||
18.04 LTS bionic |
Fixed 4.15.0-1044.70
|
|
16.04 LTS xenial |
Fixed 4.15.0-1044.46
|
|
14.04 LTS trusty | Not in release | |
linux-gcp-5.3 | ||
18.04 LTS bionic |
Not affected
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gcp-edge | ||
18.04 LTS bionic |
Fixed 4.15.0-1044.70
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gke-4.15 | ||
18.04 LTS bionic |
Fixed 4.15.0-1044.46
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-gke-5.0 | ||
18.04 LTS bionic |
Fixed 5.0.0-1017.17~18.04.1
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-hwe | ||
18.04 LTS bionic |
Fixed 5.0.0-29.31~18.04.1
|
|
16.04 LTS xenial |
Fixed 4.15.0-64.73~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-hwe-edge | ||
18.04 LTS bionic | Ignored | |
16.04 LTS xenial |
Fixed 4.15.0-64.73~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-kvm | ||
18.04 LTS bionic |
Fixed 4.15.0-1046.46
|
|
16.04 LTS xenial |
Not affected
|
|
14.04 LTS trusty | Not in release | |
linux-lts-trusty | ||
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-lts-xenial | ||
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty |
Not affected
|
|
linux-oem | ||
18.04 LTS bionic |
Fixed 4.15.0-1056.65
|
|
16.04 LTS xenial | Ignored | |
14.04 LTS trusty | Not in release | |
linux-oem-5.4 | ||
18.04 LTS bionic | Not in release | |
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-oem-osp1 | ||
18.04 LTS bionic |
Fixed 5.0.0-1022.24
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-oracle | ||
18.04 LTS bionic |
Fixed 4.15.0-1025.28
|
|
16.04 LTS xenial |
Fixed 4.15.0-1025.28~16.04.1
|
|
14.04 LTS trusty | Not in release | |
linux-oracle-5.0 | ||
18.04 LTS bionic |
Not affected
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-raspi2 | ||
18.04 LTS bionic |
Fixed 4.15.0-1047.51
|
|
16.04 LTS xenial |
Not affected
|
|
14.04 LTS trusty | Not in release | |
linux-raspi2-5.3 | ||
18.04 LTS bionic |
Not affected
|
|
16.04 LTS xenial | Not in release | |
14.04 LTS trusty | Not in release | |
linux-snapdragon | ||
18.04 LTS bionic |
Fixed 4.15.0-1064.71
|
|
16.04 LTS xenial |
Not affected
|
|
14.04 LTS trusty | Not in release |
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Severity score breakdown
Parameter | Value |
---|---|
Base score | 4.4 · Medium |
Attack vector | Local |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | Low |
Integrity impact | None |
Availability impact | Low |
Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L |
References
Related Ubuntu Security Notices (USN)
- USN-4135-2
- Linux kernel vulnerabilities
- 18 September 2019
- USN-4135-1
- Linux kernel vulnerabilities
- 18 September 2019