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Test ID:1.3.6.1.4.1.25623.1.0.844987
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory for linux (USN-5003-1)
Summary:The remote host is missing an update for the 'linux'; package(s) announced via the USN-5003-1 advisory.
Description:Summary:
The remote host is missing an update for the 'linux'
package(s) announced via the USN-5003-1 advisory.

Vulnerability Insight:
Norbert Slusarek discovered a race condition in the CAN BCM networking
protocol of the Linux kernel leading to multiple use-after-free
vulnerabilities. A local attacker could use this issue to execute arbitrary
code. (CVE-2021-3609)

It was discovered that the eBPF implementation in the Linux kernel did not
properly track bounds information for 32 bit registers when performing div
and mod operations. A local attacker could use this to possibly execute
arbitrary code. (CVE-2021-3600)

Or Cohen discovered that the SCTP implementation in the Linux kernel
contained a race condition in some situations, leading to a use-after-free
condition. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2021-23133)

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

Solution:
Please install the updated package(s).

CVSS Score:
6.9

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2021-3609
Common Vulnerability Exposure (CVE) ID: CVE-2021-3600
CopyrightCopyright (C) 2021 Greenbone Networks GmbH

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