5.5
Medium
CVE-2023-4194 A flaw was found in the Linux kernel's TUN/TAP functionality
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Virtualization 4 | Versions not published |
References
- RHSA-2023:6583 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2229498 bugzilla.redhat.com
- lore.kernel.org lore.kernel.org
- lore.kernel.org lore.kernel.org
- lore.kernel.org lore.kernel.org
Timeline
- Published
- Last modified
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