Vulnerability in Linux Kernel
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (65.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 65th percentile — 65.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
References
- cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2 (Mailing List, Vendor Advisory)
- bugs.chromium.org/p/project-zero/issues/detail (Mailing List, Third Party Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
- security.netapp.com/advisory/ntap-20200103-0001/
- usn.ubuntu.com/4284-1/ (vendor-advisory)
Frequently asked questions
- What is CVE-2019-19241?
- CVE-2019-19241 is a high-severity vulnerability in Linux Kernel. CVSS score: 7.8/10. Published 2019-12-17.
- How severe is CVE-2019-19241?
- High severity. CVSS v3 base score is 7.8 out of 10.