Vulnerability Monitor

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CVE-2023-4194

A flaw was found in the Linux kernel's TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ("tun: tun_chr_open(): correctly initialize socket uid"), - 66b2c338adce ("tap: tap_open(): correctly initialize socket uid"), pass "inode->i_uid" to sock_init_data_uid() as the last parameter and that turns out to not be accurate.

Published

2023-08-07T14:15:11.743

Last Modified

2024-11-21T08:34:35.687

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-863
  • Type: Secondary
    CWE-843
    CWE-863
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System linux linux_kernel ≤ 6.4 Yes
Operating System linux linux_kernel 6.5 Yes
Operating System linux linux_kernel 6.5 Yes
Operating System linux linux_kernel 6.5 Yes
Operating System linux linux_kernel 6.5 Yes
Operating System redhat enterprise_linux 8.0 Yes
Operating System redhat enterprise_linux 9.0 Yes
Operating System fedoraproject fedora 37 Yes
Operating System fedoraproject fedora 38 Yes
Operating System debian debian_linux 10.0 Yes
Operating System debian debian_linux 11.0 Yes
Operating System debian debian_linux 12.0 Yes
References