Bug 2467215 (CVE-2026-43279) - CVE-2026-43279 kernel: ALSA: usb-audio: Add sanity check for OOB writes at silencing
Summary: CVE-2026-43279 kernel: ALSA: usb-audio: Add sanity check for OOB writes at si...
Keywords:
Status: NEW
Alias: CVE-2026-43279
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-06 13:11 UTC by OSIDB Bzimport
Modified: 2026-08-17 04:37 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:27353 0 None None None 2026-06-19 16:51:15 UTC
Red Hat Product Errata RHSA-2026:27354 0 None None None 2026-06-19 16:29:43 UTC
Red Hat Product Errata RHSA-2026:27789 0 None None None 2026-06-22 08:29:15 UTC
Red Hat Product Errata RHSA-2026:33685 0 None None None 2026-06-30 19:04:59 UTC
Red Hat Product Errata RHSA-2026:33900 0 None None None 2026-07-01 00:13:36 UTC
Red Hat Product Errata RHSA-2026:34095 0 None None None 2026-07-01 08:40:57 UTC
Red Hat Product Errata RHSA-2026:35863 0 None None None 2026-07-06 04:51:29 UTC
Red Hat Product Errata RHSA-2026:35894 0 None None None 2026-07-06 13:42:07 UTC
Red Hat Product Errata RHSA-2026:36767 0 None None None 2026-07-08 14:51:31 UTC
Red Hat Product Errata RHSA-2026:38902 0 None None None 2026-07-13 12:50:41 UTC
Red Hat Product Errata RHSA-2026:44522 0 None None None 2026-07-23 16:00:10 UTC
Red Hat Product Errata RHSA-2026:46461 0 None None None 2026-07-27 06:53:08 UTC
Red Hat Product Errata RHSA-2026:47633 0 None None None 2026-07-29 01:06:32 UTC
Red Hat Product Errata RHSA-2026:55445 0 None None None 2026-08-17 04:37:00 UTC

Description OSIDB Bzimport 2026-05-06 13:11:20 UTC 
In the Linux kernel, the following vulnerability has been resolved:

ALSA: usb-audio: Add sanity check for OOB writes at silencing

At silencing the playback URB packets in the implicit fb mode before
the actual playback, we blindly assume that the received packets fit
with the buffer size.  But when the setup in the capture stream
differs from the playback stream (e.g. due to the USB core limitation
of max packet size), such an inconsistency may lead to OOB writes to
the buffer, resulting in a crash.

For addressing it, add a sanity check of the transfer buffer size at
prepare_silent_urb(), and stop the data copy if the received data
overflows.  Also, report back the transfer error properly from there,
too.

Note that this doesn't fix the root cause of the playback error
itself, but this merely covers the kernel Oops.
Comment 1 Vipul Nair 2026-05-06 14:39:33 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2026050613-CVE-2026-43279-4530@gregkh/T
Comment 5 errata-xmlrpc 2026-06-19 16:29:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:27354 https://access.redhat.com/errata/RHSA-2026:27354
Comment 6 errata-xmlrpc 2026-06-19 16:51:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:27353 https://access.redhat.com/errata/RHSA-2026:27353
Comment 7 errata-xmlrpc 2026-06-22 08:29:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:27789 https://access.redhat.com/errata/RHSA-2026:27789
Comment 8 errata-xmlrpc 2026-06-30 19:04:58 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:33685 https://access.redhat.com/errata/RHSA-2026:33685
Comment 9 errata-xmlrpc 2026-07-01 00:13:35 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:33900 https://access.redhat.com/errata/RHSA-2026:33900
Comment 10 errata-xmlrpc 2026-07-01 08:40:56 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:34095 https://access.redhat.com/errata/RHSA-2026:34095
Comment 11 errata-xmlrpc 2026-07-06 04:51:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Via RHSA-2026:35863 https://access.redhat.com/errata/RHSA-2026:35863
Comment 12 errata-xmlrpc 2026-07-06 13:42:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:35894 https://access.redhat.com/errata/RHSA-2026:35894
Comment 13 errata-xmlrpc 2026-07-08 14:51:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:36767 https://access.redhat.com/errata/RHSA-2026:36767
Comment 14 errata-xmlrpc 2026-07-13 12:50:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:38902 https://access.redhat.com/errata/RHSA-2026:38902
Comment 15 errata-xmlrpc 2026-07-23 16:00:09 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:44522 https://access.redhat.com/errata/RHSA-2026:44522
Comment 16 errata-xmlrpc 2026-07-27 06:53:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:46461 https://access.redhat.com/errata/RHSA-2026:46461
Comment 17 errata-xmlrpc 2026-07-29 01:06:31 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Via RHSA-2026:47633 https://access.redhat.com/errata/RHSA-2026:47633
Comment 18 errata-xmlrpc 2026-08-17 04:36:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:55445 https://access.redhat.com/errata/RHSA-2026:55445
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