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redhatcveRedhat.comRH:CVE-2022-41858
HistoryNov 22, 2022 - 2:26 p.m.

CVE-2022-41858

2022-11-2214:26:24
redhat.com
access.redhat.com
31
linux kernel
null pointer dereference
slip driver
sl_tx_timeout
blacklist
module
red hat solution

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

13.1%

A flaw was found in the Linux kernel. A NULL pointer dereference may occur while a slip driver is in progress to detach in sl_tx_timeout in drivers/net/slip/slip.c. This issue could allow an attacker to crash the system or leak internal kernel information.

Mitigation

This flaw can be mitigated by preventing the affected slip driver from loading during the boot time, and ensuring the module is added to the blacklist file.

Refer:    
How do I blacklist a kernel module to prevent it from loading automatically?   
https://access.redhat.com/solutions/41278  

CVSS3

7.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0

Percentile

13.1%