Fixed
Created: Dec 17, 2019
Updated: Apr 22, 2022
Resolved Date: Jan 11, 2020
Found In Version: 10.19.45.1
Fix Version: 10.19.45.3
Severity: Standard
Applicable for: Wind River Linux LTS 19
Component/s: Kernel
In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context.
CREATE(Triage):(User=admin) CVE-2019-19241 (https://nvd.nist.gov/vuln/detail/CVE-2019-19241)
