Bug 2107924 (CVE-2022-33743) - CVE-2022-33743 kernel: network backend may cause Linux netfront to use freed SKBs (XSA-405)
Summary: CVE-2022-33743 kernel: network backend may cause Linux netfront to use freed ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-33743
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2108189 2118313 2118314
Blocks: 2104654
TreeView+ depends on / blocked
 
Reported: 2022-07-17 17:08 UTC by Alex
Modified: 2023-05-12 20:08 UTC (History)
48 users (show)

Fixed In Version: Linux kernel 5.19-rc6
Clone Of:
Environment:
Last Closed: 2023-05-09 15:48:39 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:2148 0 None None None 2023-05-09 07:11:30 UTC
Red Hat Product Errata RHSA-2023:2458 0 None None None 2023-05-09 07:50:29 UTC

Description Alex 2022-07-17 17:08:37 UTC 
A flaw memory leak in the Linux Kernel XDP (eXpress Data Path) was found.
It can lead to denial of service for some specific configurations like if the non root privileged user from the host system can send malicious packets to the guest systems.
This flaw actual for the Linux Kernel versions 5.9 - 5.18.

References:
https://www.openwall.com/lists/oss-security/2022/07/05/5
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/xen-netfront.c?h=v5.19-rc7&id=f63c2c2032c2e3caad9add3b82cc6e91c376fd26
Comment 4 Alex 2022-07-18 14:43:18 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 2108189]
Comment 5 Justin M. Forbes 2022-07-18 21:18:44 UTC 
This was fixed for Fedora with the 5.18.10 stable kernel updates.
Comment 12 errata-xmlrpc 2023-05-09 07:11:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2148 https://access.redhat.com/errata/RHSA-2023:2148
Comment 13 errata-xmlrpc 2023-05-09 07:50:25 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:2458 https://access.redhat.com/errata/RHSA-2023:2458
Comment 14 Product Security DevOps Team 2023-05-09 15:48:34 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-33743
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