CVE-2023-4194
Published: Aug 7, 2023
Modified: Mar 24, 2026
CVSS v3.1
5.5
Description
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.
| Vendor | Product | Versions |
|---|---|---|
Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:5.14.0-362.8.1.el9_3 - < * |
Red Hat | Red Hat Enterprise Linux 9 | unaffected 0:5.14.0-362.8.1.el9_3 - < * |
Red Hat | Red Hat Enterprise Linux 6 | All versions |
Red Hat | Red Hat Enterprise Linux 7 | All versions |
Red Hat | Red Hat Enterprise Linux 7 | All versions |
Red Hat | Red Hat Enterprise Linux 8 | All versions |
Red Hat | Red Hat Enterprise Linux 8 | All versions |
Red Hat | Red Hat Enterprise Linux 9 | All versions |
Red Hat | Red Hat Virtualization 4 | All versions |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
References
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