Lucene search

K
debianDebianDEBIAN:DSA-5191-1:574E3
HistoryJul 26, 2022 - 8:07 p.m.

[SECURITY] [DSA 5191-1] linux security update

2022-07-2620:07:34
lists.debian.org
51
debian
security
advisory
update
linux
kernel
vulnerabilities
cve-2021-33655
cve-2022-2318
cve-2022-26365
cve-2022-33740
cve-2022-33741
cve-2022-33742
cve-2022-33743
cve-2022-33744
cve-2022-34918
privilege escalation
denial of service
information leaks

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

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

AI Score

8.3

Confidence

High

EPSS

0.006

Percentile

79.2%


Debian Security Advisory DSA-5191-1 [email protected]
https://www.debian.org/security/ Moritz Muehlenhoff
July 26, 2022 https://www.debian.org/security/faq


Package : linux
CVE ID : CVE-2021-33655 CVE-2022-2318 CVE-2022-26365 CVE-2022-33740
CVE-2022-33741 CVE-2022-33742 CVE-2022-33743 CVE-2022-33744
CVE-2022-34918

Several vulnerabilities have been discovered in the Linux kernel that may
lead to privilege escalation, denial of service or information leaks:

CVE-2021-33655

A user with access to a framebuffer console driver could cause a
memory out-of-bounds write via the FBIOPUT_VSCREENINFO ioctl.

CVE-2022-2318

A use-after-free in the Amateur Radio X.25 PLP (Rose) support may
result in denial of service.

CVE-2022-26365 / CVE-2022-33740 / CVE-2022-33741 / CVE-2022-33742

Roger Pau Monne discovered that Xen block and network PV device
frontends don't zero out memory regions before sharing them with the
backend, which may result in information disclosure. Additionally it
was discovered that the granularity of the grant table doesn't permit
sharing less than a 4k page, which may also result in information
disclosure.

CVE-2022-33743

Jan Beulich discovered that incorrect memory handling in the Xen
network backend may lead to denial of service.

CVE-2022-33744

Oleksandr Tyshchenko discovered that ARM Xen guests can cause a denial
of service to the Dom0 via paravirtual devices.

CVE-2022-34918

Arthur Mongodin discovered a heap buffer overflow in the Netfilter
subsystem which may result in local privilege escalation.

For the stable distribution (bullseye), these problems have been fixed in
version 5.10.127-2.

We recommend that you upgrade your linux packages.

For the detailed security status of linux please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/linux

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: [email protected]

CVSS2

7.2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

7.8

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

AI Score

8.3

Confidence

High

EPSS

0.006

Percentile

79.2%