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Ubuntu 18.04 LTS: 0045-1 Critical: Linux Kernel Memory Exposure

ubuntu
Calendar Grey November 14, 2018
Dist Ubuntu Esm H88
=========================================================================Kernel Live Patch Security
Several security issues were fixed in the kernel.

Summary

Several security issues were fixed in the kernel.

Software Description:

- linux: Linux kernel

Details:

It was discovered that the generic SCSI driver in the Linux kernel did not

properly enforce permissions on kernel memory access. A local attacker

could use this to expose sensitive information or possibly elevate

privileges. (CVE-2017-13168)

Wen Xu discovered that the ext4 filesystem implementation in the Linux

kernel did not properly ensure that xattr information remained in inode

bodies. An attacker could use this to construct a malicious ext4 image

that, when mounted, could cause a denial of service (system crash).

(CVE-2018-10880)

It was discovered that an integer overflow existed in the HID Bluetooth

implementation in the Linux kernel that could lead to a buffer overwrite.

An attacker could use this to cause a denial of service (system crash) or

possibly execute arbitrary code. (CVE-2018-9363)

It was discovered that an integer overflow existed in the CD-ROM driver of

th...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu linux memory exposure

Update Instructions

The problem can be corrected by updating your livepatches to the following
versions:

| Kernel                   | Version  | flavors                  |
|--------------------------+----------+--------------------------|
| 4.4.0-133.159            | 45.1     | generic, lowlatency      |
| 4.4.0-133.159~14.04.1    | 45.1     | lowlatency, generic      |
| 4.4.0-134.160            | 45.1     | generic, lowlatency      |
| 4.4.0-134.160~14.04.1    | 45.1     | lowlatency, generic      |
| 4.4.0-135.161~14.04.1    | 45.1     | lowlatency, generic      |
| 4.4.0-137.163~14.04.1    | 45.1     | generic, lowlatency      |
| 4.4.0-138.164            | 45.1     | generic, lowlatency      |
| 4.4.0-138.164~14.04.1    | 45.1     | lowlatency, generic      |
| 4.15.0-32.35             | 45.1     | lowlatency, generic      |
| 4.15.0-32.35~16.04.1     | 45.1     | generic, lowlatency      |
| 4.15.0-33.36             | 45.1     | lowlatency, generic      |
| 4.15.0-33.36~16.04.1     | 45.1     | lowlatency, generic      |
| 4.15.0-34.37             | 45.1     | generic, lowlatency      |
| 4.15.0-34.37~16.04.1     | 45.1     | lowlatency, generic      |
| 4.15.0-36.39             | 45.1     | generic, lowlatency      |
| 4.15.0-36.39~16.04.1     | 45.1     | generic, lowlatency      |
| 4.15.0-38.41             | 45.1     | lowlatency, generic      |
| 4.15.0-38.41~16.04.1     | 45.1     | lowlatency, generic      |

References

CVE-2017-13168, CVE-2018-10880, CVE-2018-9363, CVE-2018-16658

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November 13, 2018

Topics%20covered

Topics Covered

security advisory denial of service critical kernel ubuntu linux memory exposure

Package Information

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