CVE-2019-19241
23Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendepss 1.1%
from disclosure to weapon0 days
Published on NVDDec 17
1st PoCDec 16
exploitation probability
1.1%top 38% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
Affected products
n/a · n/apublic PoCs found — 1
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References
https://bugs.chromium.org/p/project-zero/issues/detail?id=1975https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.2https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=181e448d8709e517c9c7b523fcd209f24eb38ca7https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d69e07793f891524c6bbf1e75b9ae69db4450953https://security.netapp.com/advisory/ntap-20200103-0001/https://usn.ubuntu.com/4284-1/