Bug 1959642 (CVE-2020-24586) - CVE-2020-24586 kernel: Fragmentation cache not cleared on reconnection
Summary: CVE-2020-24586 kernel: Fragmentation cache not cleared on reconnection
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-24586
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: 1978151 1960107 1960108
Blocks: 1959275
TreeView+ depends on / blocked
 
Reported: 2021-05-12 01:24 UTC by Wade Mealing
Modified: 2021-12-17 09:58 UTC (History)
50 users (show)

Fixed In Version: kernel 5.13 rc4
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in the Linux kernels implementation of wifi fragmentation handling. An attacker with the ability to transmit within the wireless transmission range of an access point can abuse a flaw where previous contents of wifi fragments can be unintentionally transmitted to another device.
Clone Of:
Environment:
Last Closed: 2021-11-09 20:56:04 UTC

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4140 0 None None None 2021-11-09 17:22:33 UTC
Red Hat Product Errata RHSA-2021:4356 0 None None None 2021-11-09 18:25:27 UTC

Description Wade Mealing 2021-05-12 01:24:53 UTC 
A flaw was found in the Linux kernels implementation of wifi fragmentation handling. An attacker with the ability to transmit within the wireless transmission range of an access point can abuse a flaw where previous contents of wifi fragments can be unintentionally transmitted to another device.

Upstream patch: 

https://lore.kernel.org/linux-wireless/20210511200110.3f8290e59823.I622a67769ed39257327a362cfc09c812320eb979@changeid/
Comment 4 Wade Mealing 2021-05-13 04:27:25 UTC 
Mitigation:

Mitigation for this issue is either not available or the currently available options does not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Comment 20 errata-xmlrpc 2021-11-09 17:22:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4140 https://access.redhat.com/errata/RHSA-2021:4140
Comment 21 errata-xmlrpc 2021-11-09 18:25:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4356 https://access.redhat.com/errata/RHSA-2021:4356
Comment 22 Product Security DevOps Team 2021-11-09 20:56:01 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-2020-24586
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