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.
History

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cve-icon MITRE Information

Status: PUBLISHED

Assigner: redhat

Published: 2023-08-07T13:19:44.215Z

Updated: 2024-05-23T21:15:58.026Z

Reserved: 2023-08-06T15:05:48.734Z


Link: CVE-2023-4194

JSON object: View

cve-icon NVD Information

Status : Modified

Published: 2023-08-07T14:15:11.743

Modified: 2024-05-08T09:15:08.160


Link: CVE-2023-4194

JSON object: View

cve-icon Redhat Information

No data.