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ubuntuUbuntuUSN-6234-1
HistoryJul 18, 2023 - 12:00 a.m.

Linux kernel (Xilinx ZynqMP) vulnerability

2023-07-1800:00:00
ubuntu.com
37
xilinx zynqmp
ubuntu 20.04
kernel vulnerability
out-of-bounds write
denial of service
arbitrary code
cve-2023-35788
invlpg instruction
tlb entries
sensitive information
kernel memory
undesired behaviors

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

8.4

Confidence

High

EPSS

0.001

Percentile

28.7%

Releases

  • Ubuntu 20.04 LTS

Packages

  • linux-xilinx-zynqmp - Linux kernel for Xilinx ZynqMP processors

Details

Hangyu Hua discovered that the Flower classifier implementation in the
Linux kernel contained an out-of-bounds write vulnerability. An attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-35788, LP: #2023577)

It was discovered that for some Intel processors the INVLPG instruction
implementation did not properly flush global TLB entries when PCIDs are
enabled. An attacker could use this to expose sensitive information
(kernel memory) or possibly cause undesired behaviors. (LP: #2023220)

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

8.4

Confidence

High

EPSS

0.001

Percentile

28.7%