vulnerability
Oracle Linux: CVE-2023-1076: ELSA-2023-6583: kernel security, bug fix, and enhancement update (IMPORTANT)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:C/A:N) | Feb 4, 2023 | Nov 16, 2023 | Dec 3, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:C/A:N)
Published
Feb 4, 2023
Added
Nov 16, 2023
Modified
Dec 3, 2025
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.
A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and get unauthorized access to some resources.
A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and get unauthorized access to some resources.
Solution
oracle-linux-upgrade-kernel
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