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SUSE: CVE-2019-19241: SUSE Linux Security Advisory

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SUSE: CVE-2019-19241: SUSE Linux Security Advisory

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
12/17/2019
Created
02/10/2022
Added
02/04/2022
Modified
02/04/2022

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.

Solution(s)

  • suse-upgrade-kernel-default

References

  • USN-4284-1
  • CVE-2019-19241

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