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CVE-2019-19241

Description

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.

Risk Information

Base Score
7.8
MODERATE
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS Score
Exploitation Probability
0.935

Associated Vulnerability

VulnerabilityOS Platform
Linux kernel (USN-4284-1) linux-image-aws_5.3.0.1011.13_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-gcp_5.3.0.1012.13_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-gke_5.3.0.1012.13_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-kvm_5.3.0.1010.12_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-oracle_5.3.0.1009.10_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-generic_5.3.0.40.34_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-virtual_5.3.0.40.34_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-gcp-edge_5.3.0.1012.11_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-azure-edge_5.3.0.1013.13_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-lowlatency_5.3.0.40.34_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-1010-kvm_5.3.0-1010.11_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-1011-aws_5.3.0-1011.12_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-1012-gcp_5.3.0-1012.13_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-1012-gcp_5.3.0-1012.13~18.04.1_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-1013-azure_5.3.0-1013.14~18.04.1_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-40-generic_5.3.0-40.32_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-40-generic_5.3.0-40.32~18.04.1_i386.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-40-generic_5.3.0-40.32~18.04.1_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-1009-oracle_5.3.0-1009.10_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-generic-hwe-18.04_5.3.0.40.97_i386.debLinux
Linux kernel (USN-4284-1) linux-image-generic-hwe-18.04_5.3.0.40.97_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-virtual-hwe-18.04_5.3.0.40.97_i386.debLinux
Linux kernel (USN-4284-1) linux-image-virtual-hwe-18.04_5.3.0.40.97_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-40-lowlatency_5.3.0-40.32_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-40-lowlatency_5.3.0-40.32~18.04.1_i386.debLinux
Linux kernel (USN-4284-1) linux-image-5.3.0-40-lowlatency_5.3.0-40.32~18.04.1_amd64.debLinux
Linux kernel (USN-4284-1) linux-image-lowlatency-hwe-18.04_5.3.0.40.97_i386.debLinux
Linux kernel (USN-4284-1) linux-image-lowlatency-hwe-18.04_5.3.0.40.97_amd64.debLinux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234