vulnerability
CentOS Linux: CVE-2023-1076: Important: kernel security, bug fix, and enhancement update (CESA-2023:6583)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:C/A:N) | Mar 27, 2023 | Nov 8, 2023 | Jan 28, 2025 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:C/A:N)
Published
Mar 27, 2023
Added
Nov 8, 2023
Modified
Jan 28, 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.
Solution
centos-upgrade-kernel
References
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