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Oracle Linux: (CVE-2023-1076) ELSA-2023-6583: kernel security, bug fix, and enhancement update

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Oracle Linux: (CVE-2023-1076) ELSA-2023-6583: kernel security, bug fix, and enhancement update

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
03/16/2023
Created
11/18/2023
Added
11/16/2023
Modified
11/16/2023

Description

A flaw was found in the Linux Kernel. The tun/tap sockets have their socket UID hardcoded to 0 due to a type confusion in their initialization function. While it will be often correct, as tuntap devices require CAP_NET_ADMIN, it may not always be the case, e.g., a non-root user only having that capability. This would make tun/tap sockets being incorrectly treated in filtering/routing decisions, possibly bypassing network filters.

Solution(s)

  • oracle-linux-upgrade-kernel

References

  • ELSA-2023-6583
  • CVE-2023-1076

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