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CVE-2019-11135

Publication date 12 November 2019

Last updated 24 July 2024

Ubuntu priority

High

Why this priority?

Cvss 3 Severity Score

6.5 · Medium

Score breakdown

TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access.

From the Ubuntu Security Team

Stephan van Schaik, Alyssa Milburn, Sebastian Österlund, Pietro Frigo, Kaveh Razavi, Herbert Bos, Cristiano Giuffrida, Giorgi Maisuradze, Moritz Lipp, Michael Schwarz, Daniel Gruss, and Jo Van Bulck discovered that Intel processors using Transactional Synchronization Extensions (TSX) could expose memory contents previously stored in microarchitectural buffers to a malicious process that is executing on the same CPU core. A local attacker could use this to expose sensitive information.

Read the notes from the security team

Status

Package Ubuntu Release Status
intel-microcode 20.04 LTS focal
Fixed 3.20191115.1ubuntu1
19.10 eoan
Fixed 3.20191112-0ubuntu0.19.10.2
19.04 disco
Fixed 3.20191112-0ubuntu0.19.04.2
18.04 LTS bionic
Fixed 3.20191112-0ubuntu0.18.04.2
16.04 LTS xenial
Fixed 3.20191112-0ubuntu0.16.04.2
14.04 LTS trusty
linux 20.04 LTS focal
Not affected
19.10 eoan
Fixed 5.3.0-22.24
19.04 disco
Fixed 5.0.0-35.38
18.04 LTS bionic
Fixed 4.15.0-69.78
16.04 LTS xenial
Fixed 4.4.0-168.197
14.04 LTS trusty
linux-aws 20.04 LTS focal
Not affected
19.10 eoan
Fixed 5.3.0-1007.8
19.04 disco
Fixed 5.0.0-1021.24
18.04 LTS bionic
Fixed 4.15.0-1054.56
16.04 LTS xenial
Fixed 4.4.0-1098.109
14.04 LTS trusty
linux-aws-5.0 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-aws-hwe 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 4.15.0-1054.56~16.04.1
14.04 LTS trusty Not in release
linux-azure 20.04 LTS focal
Not affected
19.10 eoan
Fixed 5.3.0-1007.8
19.04 disco
Fixed 5.0.0-1025.27
18.04 LTS bionic
Fixed 5.0.0-1025.27~18.04.1
16.04 LTS xenial
Fixed 4.15.0-1063.68
14.04 LTS trusty
linux-azure-5.3 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-azure-edge 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Ignored
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-gcp 20.04 LTS focal
Not affected
19.10 eoan
Fixed 5.3.0-1008.9
19.04 disco
Fixed 5.0.0-1025.26
18.04 LTS bionic
Fixed 5.0.0-1025.26~18.04.1
16.04 LTS xenial
Fixed 4.15.0-1049.52
14.04 LTS trusty Not in release
linux-gcp-5.3 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gcp-edge 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Ignored
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke-4.15 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 4.15.0-1048.51
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke-5.0 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 5.0.0-1025.26~18.04.1
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke-5.3 20.04 LTS focal Not in release
19.10 eoan Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-hwe 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Fixed 5.0.0-35.38~18.04.1
16.04 LTS xenial
Fixed 4.15.0-69.78~16.04.1
14.04 LTS trusty Not in release
linux-hwe-edge 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Ignored
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-kvm 20.04 LTS focal
Not affected
19.10 eoan
Fixed 5.3.0-1007.8
19.04 disco
Fixed 5.0.0-1022.24
18.04 LTS bionic
Fixed 4.15.0-1050.50
16.04 LTS xenial
Fixed 4.4.0-1062.69
14.04 LTS trusty Not in release
linux-lts-trusty 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-xenial 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty
linux-oem 20.04 LTS focal Not in release
19.10 eoan
Fixed 4.15.0-1063.72
19.04 disco Ignored
18.04 LTS bionic
Fixed 4.15.0-1063.72
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-oem-5.6 20.04 LTS focal
Not affected
19.10 eoan Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oem-osp1 20.04 LTS focal Not in release
19.10 eoan
Fixed 5.0.0-1027.31
19.04 disco Ignored
18.04 LTS bionic
Fixed 5.0.0-1027.31
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oracle 20.04 LTS focal
Not affected
19.10 eoan
Fixed 5.3.0-1006.7
19.04 disco
Fixed 5.0.0-1007.12
18.04 LTS bionic
Fixed 4.15.0-1029.32
16.04 LTS xenial
Fixed 4.15.0-1029.32~16.04.1
14.04 LTS trusty Not in release
linux-oracle-5.0 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oracle-5.3 20.04 LTS focal Not in release
19.10 eoan Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-raspi2 20.04 LTS focal Ignored
19.10 eoan
Fixed 5.3.0-1012.14
19.04 disco
Fixed 5.0.0-1022.23
18.04 LTS bionic
Fixed 4.15.0-1052.56
16.04 LTS xenial
Fixed 4.4.0-1126.135
14.04 LTS trusty Not in release
linux-raspi2-5.3 20.04 LTS focal Not in release
19.10 eoan Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-snapdragon 20.04 LTS focal Not in release
19.10 eoan Not in release
19.04 disco Ignored
18.04 LTS bionic
Fixed 4.15.0-1069.76
16.04 LTS xenial
Fixed 4.4.0-1130.138
14.04 LTS trusty Not in release

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Notes

tyhicks

This issue only affects processors manufactured by Intel that support Intel® Transactional Synchronization Extensions (TSX)

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
linux

Severity score breakdown

Parameter Value
Base score 6.5 · Medium
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

Related Ubuntu Security Notices (USN)

    • USN-4186-1
    • Linux kernel vulnerabilities
    • 13 November 2019
    • USN-4182-2
    • Intel Microcode update
    • 12 November 2019
    • USN-4186-2
    • Linux kernel (Xenial HWE) vulnerabilities
    • 13 November 2019
    • USN-4182-1
    • Intel Microcode update
    • 12 November 2019
    • USN-4187-1
    • Linux kernel vulnerability
    • 13 November 2019
    • USN-4188-1
    • Linux kernel vulnerability
    • 13 November 2019
    • USN-4184-1
    • Linux kernel vulnerabilities
    • 13 November 2019
    • USN-4185-2
    • Linux kernel (Azure) vulnerabilities
    • 13 November 2019
    • USN-4185-1
    • Linux kernel vulnerabilities
    • 13 November 2019
    • USN-4183-1
    • Linux kernel vulnerabilities
    • 13 November 2019

Other references