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CVE-2019-19241
Good to know:
Date: December 17, 2019
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.
Language: C
Severity Score
Related Resources (10)
Severity Score
Weakness Type (CWE)
Insufficient Information
NVD-CWE-noinfoImproper Privilege Management
CWE-269Top Fix
Upgrade Version
Upgrade to version linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744;linux-yocto - 4.8.12+gitAUTOINC+926c93ae07_021b4aef55;linux-libc-headers - 5.8
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | LOCAL |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | HIGH |
| Integrity (I): | HIGH |
| Availability (A): | HIGH |
CVSS v2
| Base Score: |
|
|---|---|
| Access Vector (AV): | LOCAL |
| Access Complexity (AC): | LOW |
| Authentication (AU): | NONE |
| Confidentiality (C): | PARTIAL |
| Integrity (I): | PARTIAL |
| Availability (A): | PARTIAL |
| Additional information: |