Bug 1833445 (CVE-2020-11608) - CVE-2020-11608 kernel: NULL pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs in drivers/media/usb/gspca/ov519.c
Summary: CVE-2020-11608 kernel: NULL pointer dereferences in ov511_mode_init_regs and ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-11608
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1833446 1835670 1835671 1835672 1835673 1835674 1870321 1900751
Blocks: 1833448
TreeView+ depends on / blocked
 
Reported: 2020-05-08 16:55 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-12-15 11:17 UTC (History)
44 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-12-15 11:17:01 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2021:2538 0 None None None 2021-06-23 18:05:51 UTC
Red Hat Product Errata RHBA-2021:2541 0 None None None 2021-06-24 11:50:38 UTC

Description Guilherme de Almeida Suckevicz 2020-05-08 16:55:55 UTC 
An issue was discovered in the Linux kernel before 5.6.1. drivers/media/usb/gspca/ov519.c allows NULL pointer dereferences in ov511_mode_init_regs and ov518_mode_init_regs when there are zero endpoints.

Reference and upstream commit:
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.6.1
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=998912346c0da53a6dbb71fab3a138586b596b30
Comment 1 Guilherme de Almeida Suckevicz 2020-05-08 16:57:37 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1833446]
Comment 2 Justin M. Forbes 2020-05-11 14:21:25 UTC 
This was fixed for Fedora with the 5.5.14 stable kernel updates.
Comment 3 Petr Matousek 2020-05-14 09:55:43 UTC 
Mitigation:

In order to mitigate this issue it is possible to prevent the affected code from being loaded by blacklisting the kernel module gspca_ov519. For instructions relating to how to blacklist a kernel module refer to: https://access.redhat.com/solutions/41278 .
Comment 4 Petr Matousek 2020-05-14 09:57:44 UTC 
Statement:

This issue is rated as having Low impact because of the preconditions needed to trigger the issue (physical access).
Comment 7 errata-xmlrpc 2021-05-18 13:19:54 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1578 https://access.redhat.com/errata/RHSA-2021:1578
Comment 8 errata-xmlrpc 2021-05-18 14:40:16 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:1739 https://access.redhat.com/errata/RHSA-2021:1739
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