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Ubuntu: Security Advisory for linux (USN-4313-1)
Information
Severity
Severity
Medium
Family
Family
Ubuntu Local Security Checks
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:P/I:N/A:N
Solution Type
Solution Type
Vendor Patch
Created
Created
4 years ago
Modified
Modified
4 years ago
Summary
The remote host is missing an update for the 'linux' package(s) announced via the USN-4313-1 advisory.
Insight
Insight
Manfred Paul discovered that the bpf verifier in the Linux kernel did not properly calculate register bounds for certain operations. A local attacker could use this to expose sensitive information (kernel memory) or gain administrative privileges.
Affected Software
Affected Software
'linux' package(s) on Ubuntu 19.10, Ubuntu 18.04 LTS.
Detection Method
Detection Method
Checks if a vulnerable package version is present on the target host.
Solution
Solution
Please install the updated package(s).