CVE-2019-19241
unknown
CVSS v3
—
CVSS v2
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VIR risk
—
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-19241
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 5.3.15-1 |
| debian | bullseye | fixed | 5.3.15-1 |
| debian | forky | fixed | 5.3.15-1 |
| debian | sid | fixed | 5.3.15-1 |
| debian | trixie | fixed | 5.3.15-1 |
References
Verify integrity in audit chain (admin only). AS-IS.