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CVE-2018-10878

Publication date 26 July 2018

Last updated 24 July 2024

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

A flaw was found in the Linux kernel's ext4 filesystem. A local user can cause an out-of-bounds write and a denial of service or unspecified other impact is possible by mounting and operating a crafted ext4 filesystem image.

From the Ubuntu Security Team

Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code.

Read the notes from the security team

Status

Package Ubuntu Release Status
linux 19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-44.47
17.10 artful Ignored
16.04 LTS xenial
Fixed 4.4.0-134.160
14.04 LTS trusty Ignored
linux-aws 19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1032.34
17.10 artful Not in release
16.04 LTS xenial
Fixed 4.4.0-1066.76
14.04 LTS trusty
Fixed 4.4.0-1028.31
linux-aws-hwe 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
16.04 LTS xenial
Fixed 4.15.0-1032.34~16.04.1
14.04 LTS trusty Not in release
linux-azure 19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1037.39
17.10 artful Not in release
16.04 LTS xenial
Fixed 4.15.0-1037.39~16.04.1
14.04 LTS trusty
Fixed 4.15.0-1037.39~14.04.2
linux-azure-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 4.15.0-1037.39
17.10 artful Not in release
16.04 LTS xenial
Fixed 4.15.0-1037.39~16.04.1
14.04 LTS trusty Not in release
linux-euclid 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-flo 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-gcp 19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1027.28
17.10 artful Not in release
16.04 LTS xenial
Fixed 4.15.0-1027.28~16.04.1
14.04 LTS trusty Not in release
linux-gcp-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Not affected
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-gke 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Not affected
17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-goldfish 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-grouper 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-hwe 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Not affected
17.10 artful Not in release
16.04 LTS xenial
Fixed 4.15.0-45.48~16.04.1
14.04 LTS trusty Not in release
linux-hwe-edge 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic
Not affected
17.10 artful Not in release
16.04 LTS xenial
Fixed 4.15.0-45.48~16.04.1
14.04 LTS trusty Not in release
linux-kvm 19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1029.29
17.10 artful Not in release
16.04 LTS xenial
Fixed 4.4.0-1032.38
14.04 LTS trusty Not in release
linux-lts-trusty 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-lts-utopic 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Ignored
linux-lts-vivid 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Ignored
linux-lts-wily 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Ignored
linux-lts-xenial 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty
Fixed 4.4.0-134.160~14.04.1
linux-maguro 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-mako 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-manta 19.04 disco Not in release
18.10 cosmic Not in release
18.04 LTS bionic Not in release
17.10 artful Not in release
16.04 LTS xenial Not in release
14.04 LTS trusty Not in release
linux-oem 19.04 disco
Not affected
18.10 cosmic
Fixed 4.15.0-1033.38
18.04 LTS bionic
Fixed 4.15.0-1033.38
17.10 artful Not in release
16.04 LTS xenial Ignored
14.04 LTS trusty Not in release
linux-oracle 19.04 disco
Not affected
18.10 cosmic
Fixed 4.15.0-1008.10
18.04 LTS bionic
Fixed 4.15.0-1008.10
16.04 LTS xenial
Fixed 4.15.0-1008.10~16.04.1
14.04 LTS trusty Not in release
linux-raspi2 19.04 disco
Not affected
18.10 cosmic
Not affected
18.04 LTS bionic
Fixed 4.15.0-1031.33
17.10 artful Ignored
16.04 LTS xenial
Fixed 4.4.0-1095.103
14.04 LTS trusty Not in release
linux-snapdragon 19.04 disco
Not affected
18.10 cosmic Not in release
18.04 LTS bionic
Fixed 4.15.0-1053.57
17.10 artful Ignored
16.04 LTS xenial
Fixed 4.4.0-1099.104
14.04 LTS trusty Not in release

Notes

sbeattie

reproducer in bug report

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 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3753-1
    • Linux kernel vulnerabilities
    • 24 August 2018
    • USN-3871-4
    • Linux kernel (HWE) vulnerabilities
    • 4 February 2019
    • USN-3871-1
    • Linux kernel vulnerabilities
    • 29 January 2019
    • USN-3871-5
    • Linux kernel (Azure) vulnerabilities
    • 7 February 2019
    • USN-3753-2
    • Linux kernel (Xenial HWE) vulnerabilities
    • 24 August 2018
    • USN-3871-3
    • Linux kernel (AWS, GCP, KVM, OEM, Raspberry Pi 2) vulnerabilities
    • 4 February 2019

Other references