Bug 1944695 (CVE-2021-29265) - CVE-2021-29265 kernel: race conditions in usbip_sockfd_store function in drivers/usb/usbip/stub_dev.c can lead to DoS
Summary: CVE-2021-29265 kernel: race conditions in usbip_sockfd_store function in driv...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2021-29265
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: 1944696
Blocks: 1944697
TreeView+ depends on / blocked
 
Reported: 2021-03-30 13:57 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-04-05 17:35 UTC (History)
44 users (show)

Fixed In Version:
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Doc Text:
A flaw was found in the Linux kernel. The usbip driver allows attackers to cause a denial of service (GPF) because the stub-up sequence has race conditions during an update of the local and shared status. The highest threat from this vulnerability is to system availability.
Clone Of:
Environment:
Last Closed: 2021-04-05 17:35:37 UTC
Embargoed:

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Description Guilherme de Almeida Suckevicz 2021-03-30 13:57:08 UTC 
An issue was discovered in the Linux kernel before 5.11.7. usbip_sockfd_store in drivers/usb/usbip/stub_dev.c allows attackers to cause a denial of service (GPF) because the stub-up sequence has race conditions during an update of the local and shared status.

Reference and upstream patch:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9380afd6df70e24eacbdbde33afc6a3950965d22
Comment 1 Guilherme de Almeida Suckevicz 2021-03-30 13:57:56 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1944696]
Comment 2 Justin M. Forbes 2021-03-30 16:22:15 UTC 
This was fixed for Fedora with the 5.11.7 stable kernel update.
Comment 4 Product Security DevOps Team 2021-04-05 17:35:37 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-2021-29265
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