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CVE-2019-19241 PUBLISHED

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.

EPSS 0.93% · 76.0th percentile

Risk Scores

EPSS Score
0.93%
76.0th percentile

Affected Products

VendorProductVersions
Ubuntu:22.04:LTSlinux-realtime5.15.0-1032.35, 0
Ubuntu:20.04:LTSlinux-gkeop-5.155.15.0-1015.19~20.04.1, 5.15.0-1013.17~20.04.1, 5.15.0-1012.16~20.04.1
Ubuntu:24.04:LTSlinux-raspi-realtime0, 6.8.0-2019.20
Ubuntu:20.04:LTSlinux-azure-fde5.4.0-1070.73+cvm1.1, 0, 5.4.0-1063.66+cvm2.2
Ubuntu:18.04:LTSlinux-hwe4.18.0-17.18~18.04.1, 4.18.0-25.26~18.04.1, 5.0.0-27.28~18.04.1
Ubuntu:18.04:LTSlinux-azure-5.30, 5.3.0-1009.10~18.04.1, 5.3.0-1008.9~18.04.1
Ubuntu:18.04:LTSlinux-gke-5.35.3.0-1011.12~18.04.1, 0
Ubuntu:18.04:LTSlinux-raspi2-5.30, 5.3.0-1017.19~18.04.1
Ubuntu:22.04:LTSlinux-intel-iot-realtime5.15.0-1073.75, 0
Ubuntu:18.04:LTSlinux-gcp-5.35.3.0-1008.9~18.04.1, 5.3.0-1009.10~18.04.1, 5.3.0-1010.11~18.04.1
Ubuntu:18.04:LTSlinux-gcp-edge5.0.0-1011.11~18.04.1, 5.0.0-1013.13~18.04.1, 0
Ubuntu:22.04:LTSlinux-riscv5.15.0-1005.5, 5.15.0-1004.4, 5.13.0-1010.11+22.04.1
Ubuntu:18.04:LTSlinux-azure-edge0, 4.18.0-1006.6~18.04.1, 4.18.0-1007.7~18.04.1
Ubuntu:18.04:LTSlinux-hwe-edge5.0.0-17.18~18.04.1, 0, 5.0.0-15.16~18.04.1
Ubuntu:20.04:LTSlinux-gkeop5.4.0-1014.15, 5.4.0-1016.17, 5.4.0-1018.19
Ubuntu:20.04:LTSlinux-raspi20, 5.3.0-1007.8, 5.3.0-1014.16
Ubuntu:20.04:LTSlinux-gke5.4.0-1074.79, 5.4.0-1105.112, 5.4.0-1104.111
Ubuntu:16.04:LTSlinux-hwe-edge0, 4.15.0-23.25~16.04.1, 4.15.0-22.24~16.04.1

Timeline

References

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