CVE-2019-19241

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.

CVSS v3.1

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

4.6 MEDIUMAV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS

1.09% chance of exploitation in the next 30 days, 63th percentile

Published

2019-12-17

Updated

2024-08-05

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/47779

References

• CVE Record
• NVD entry

Related

• CVE-2019-19231
• CVE-2019-19245
• CVE-2019-19229
• CVE-2019-19265
• CVE-2019-19228
• CVE-2019-19266