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ubuntucveUbuntu.comUB:CVE-2019-19241
HistoryDec 17, 2019 - 12:00 a.m.

CVE-2019-19241

2019-12-1700:00:00
ubuntu.com
ubuntu.com
10

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

32.9%

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.

OSVersionArchitecturePackageVersionFilename
ubuntu19.10noarchlinux< 5.3.0-40.32UNKNOWN
ubuntu19.10noarchlinux-azure< 5.3.0-1013.14UNKNOWN
ubuntu19.10noarchlinux-aws< 5.3.0-1011.12UNKNOWN
ubuntu18.04noarchlinux-azure-5.3< 5.3.0-1013.14~18.04.1UNKNOWN
ubuntu19.10noarchlinux-gcp< 5.3.0-1012.13UNKNOWN
ubuntu18.04noarchlinux-gcp-5.3< 5.3.0-1012.13~18.04.1UNKNOWN
ubuntu18.04noarchlinux-gke-5.3< 5.3.0-1012.13~18.04.1UNKNOWN
ubuntu18.04noarchlinux-hwe< 5.3.0-40.32~18.04.1UNKNOWN
ubuntu19.10noarchlinux-kvm< 5.3.0-1010.11UNKNOWN
ubuntu19.10noarchlinux-oracle< 5.3.0-1009.10UNKNOWN
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7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

32.9%