CVE-2023-4194
Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
07/08/2023
Last modified:
06/09/2024
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.
Impact
Base Score 3.x
5.50
Severity 3.x
MEDIUM
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.4 (including) | |
| cpe:2.3:o:linux:linux_kernel:6.5:rc1:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:6.5:rc2:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:6.5:rc3:*:*:*:*:*:* | ||
| cpe:2.3:o:linux:linux_kernel:6.5:rc4:*:*:*:*:*:* | ||
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | ||
| cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* | ||
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* | ||
| cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:* |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- https://access.redhat.com/errata/RHSA-2023:6583
- https://access.redhat.com/security/cve/CVE-2023-4194
- https://bugzilla.redhat.com/show_bug.cgi?id=2229498
- https://lore.kernel.org/all/20230731164237.48365-1-lersek@redhat.com/
- https://lore.kernel.org/all/20230731164237.48365-2-lersek@redhat.com/
- https://lore.kernel.org/all/20230731164237.48365-3-lersek@redhat.com/