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Test ID:1.3.6.1.4.1.25623.1.0.844385
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory for linux-aws (USN-4324-1)
Summary:The remote host is missing an update for the 'linux-aws'; package(s) announced via the USN-4324-1 advisory.
Description:Summary:
The remote host is missing an update for the 'linux-aws'
package(s) announced via the USN-4324-1 advisory.

Vulnerability Insight:
Al Viro discovered that the vfs layer in the Linux kernel contained a use-
after-free vulnerability. A local attacker could use this to cause a denial
of service (system crash) or possibly expose sensitive information (kernel
memory). (CVE-2020-8428)

Shijie Luo discovered that the ext4 file system implementation in the Linux
kernel did not properly check for a too-large journal size. An attacker
could use this to construct a malicious ext4 image that, when mounted,
could cause a denial of service (soft lockup). (CVE-2020-8992)

Affected Software/OS:
'linux-aws' package(s) on Ubuntu 18.04 LTS, Ubuntu 16.04 LTS.

Solution:
Please install the updated package(s).

CVSS Score:
4.9

CVSS Vector:
AV:L/AC:L/Au:N/C:N/I:N/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2020-8428
Debian Security Information: DSA-4667 (Google Search)
https://www.debian.org/security/2020/dsa-4667
Debian Security Information: DSA-4698 (Google Search)
https://www.debian.org/security/2020/dsa-4698
http://packetstormsecurity.com/files/157233/Kernel-Live-Patch-Security-Notice-LSN-0065-1.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=d0cb50185ae942b03c4327be322055d622dc79f6
https://github.com/torvalds/linux/commit/d0cb50185ae942b03c4327be322055d622dc79f6
https://www.openwall.com/lists/oss-security/2020/01/28/2
https://lists.debian.org/debian-lts-announce/2020/06/msg00012.html
http://www.openwall.com/lists/oss-security/2020/01/28/4
http://www.openwall.com/lists/oss-security/2020/02/02/1
SuSE Security Announcement: openSUSE-SU-2020:0336 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00021.html
https://usn.ubuntu.com/4318-1/
https://usn.ubuntu.com/4319-1/
https://usn.ubuntu.com/4320-1/
https://usn.ubuntu.com/4324-1/
https://usn.ubuntu.com/4325-1/
Common Vulnerability Exposure (CVE) ID: CVE-2020-8992
https://patchwork.ozlabs.org/patch/1236118/
https://usn.ubuntu.com/4342-1/
https://usn.ubuntu.com/4344-1/
https://usn.ubuntu.com/4419-1/
CopyrightCopyright (C) 2020 Greenbone Networks GmbH

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